Substance-Induced Psychotic Disorder

Substance-induced psychotic disorder (SIPD) is a mental health condition that involves psychotic symptoms, in the form of hallucinations and delusions, triggered by substance use, intoxication, or withdrawal. SIPD is diagnosed when symptoms begin during drug use or withdrawal and persist for an extended period of time, distinguishing it from primary psychotic disorders unrelated to substance use.
Star Gorven

Written by: Star Gorven on March 19, 2026

Kaye Smith, PhD

Reviewed by: Kaye Smith, PhD on April 1, 2026

Updated On: March 19, 2026

8-10 mins read

Key Takeaways

  • Substance-induced psychotic disorder is a psychiatric disorder marked by delusions and/or hallucinations that emerge during, or soon after, substance intoxication or withdrawal. The diagnosis requires that symptoms are not better explained by another psychotic condition.

  • SIPD is characterized by positive psychotic experiences such as false beliefs (delusions) and sensory misperceptions (hallucinations). Negative symptoms may also appear, including diminished emotional expression, lack of motivation, reduced speech, and social withdrawal, although these are not required for diagnosis.

  • Treatment focuses on immediate detoxification from substances, often accompanied by antipsychotic medication. For addicted individuals, longer-term care involves relapse prevention and integrated dual diagnosis treatment addressing both substance use and psychiatric symptoms to reduce recurrence and progression.

Understanding Substance-Induced Psychotic Disorder

The Diagnostic and Statistical Manual for Mental Disorders, Fifth Edition (DSM-5) classifies substance-induced psychotic disorder (SIPD) under the “Schizophrenia Spectrum and Other Psychotic Disorders” section. This means that the condition is considered to be a psychiatric disorder rather than a substance use disorder (SUD). [1]

In light of this, in cases where an individual has a psychotic episode after using drugs for the first time, doctors can only tell if the psychosis is a symptom of a mental illness (and not directly related to substance use) if the symptoms were present before drug use, or persist during a substantial period of drug abstinence. [1] [2]

Symptoms of psychosis present as an inability to distinguish reality from delusions (false beliefs) or hallucinations (sensory perceptions that are not actually taking place). Hallucinations can take the form of seeing, hearing, feeling, tasting, or smelling things that are not there. Delusions and hallucinations differ wildly from person to person, and can be either enjoyable or terrifying. [1]

Psychotic symptoms may emerge during intoxication or withdrawal, and individuals with SIPD are entirely unaware that these perceptions are a mental illusion. Additionally, though not in all cases, substance-induced psychotic disorder may cause negative symptoms (such as jumbled speech, unpredictable behavior, and a lack of emotion, motivation, or response). [1]

Many, but not all, episodes of SIPD are caused by substance use disorder as opposed to users with no SUD diagnosis. SUD is defined by the DSM-5 as “a problematic pattern of substance use” that ranges from mild (2 to 3 criteria) to moderate (4 to 5 criteria) and severe (more than 6 criteria), presenting within 12 months. [1] [2]

Although even individuals with mild substance use disorder can experience a psychotic episode, not all individuals with SUD are addicted to substances or experience psychosis. However, research has revealed that the risk of developing substance-induced psychotic disorder appears to increase the more heavily and frequently a person uses a substance. [2]

Additionally, with increased substance use, substance use disorder has been found to progress from mild to moderate or severe stages, widely referred to as addiction. At this level of severity, individuals with SUD are known to justify continued use by denying any negative consequences directly linked to substance abuse.

Consequently, addicted individuals who are diagnosed with SIPD for the first time are likely to continue using substances. This puts individuals with SUD at a high risk of experiencing more psychoses in the future, which increases the risk of developing chronic schizophrenia, among other things. For this reason, it is imperative for those addicted to substances to seek SUD treatment in addition to professional care for substance-induced psychosis. [3]

How Common Is It?

According to a 2024 review, the exact prevalence of substance-induced psychosis (SIP) is currently unknown. This is largely due to the fact that individuals experiencing a psychotic episode are not aware that they have lost touch with reality, and subsequently, typically do not seek support. [3]

That said, a recent study from Scandinavia found that the number of people treated for substance-induced psychosis each year has remained fairly steady over the past 20 years (around 9 to 14 cases per 100,000 people), although SIP cases linked to cannabis have increased in recent years. [3]

That said, substance-induced psychosis is estimated to give rise to approximately 7% to 10% of individuals who experience psychosis for the first time and enter early SUD treatment programs. Furthermore, one in four people who are diagnosed with SIPD go on to develop schizophrenia later in life. [3]

Symptoms of Substance-Induced Psychotic Disorder

Both the DSM-5 and the ICD-11 (International Classification of Diseases, 11th Revision) recognize substance-induced psychotic disorder, but there are subtle similarities and differences in the diagnostic criteria. [1] [4]

That said, the guides agree on two key symptoms (delusions and hallucinations), of which at least one must be present to signal the presence of SIPD. Additionally, the DSM-5 and ICD-11 align on their view of symptom onset, with each guide outlining that psychosis begins during intoxication or shortly after withdrawal. [1] [4]

Delusions

Delusions are strongly held false beliefs that vary from person to person. This means that while one individual may have an enjoyable experience (such as believing themselves to be a sun God), another person could be plagued with thoughts that lead them to believe they are in life-threatening danger.

The most common types of delusions include:

  • Delusions of grandeur: A belief that one is unusually powerful, famous, or special (e.g., believing oneself to be a god or well-known figure), or to possess superhuman abilities (such as flying, predicting the future, or being able to move objects with the mind).

  • Persecutory delusions: An individual with persecutory delusions believes that others are plotting to harm them and may fear being followed, watched, harassed, tracked, or targeted in some way.

  • Thought broadcasting: The belief that one’s thoughts are being shared telepathically or transmitted in a way that makes others aware of them.

  • Referential delusions: The belief that everyday occurrences (such as someone sneezing, a song playing, or a bird’s call) carry hidden messages that can only be interpreted by them.

  • Thought insertion: The belief that an outside force is controlling one’s thoughts, movements, or actions.

Hallucinations

Hallucinations are sensory experiences that feel entirely real, when in reality, there is no actual sensory input. In other words, the brain is creating and responding to sensations that are not occurring in real life. There are as many types of hallucination as there are senses, yet each one is an illusion of the mind, meaning that witnesses can not confirm their validity.

While the following hallucinations are fairly common, there are an infinite array of sensory misperceptions that may occur:

  • Visual hallucinations: Seeing shadowy shapes, distorted faces, flashing lights, strange colors, people (familiar or not), scenes, or symbols.

  • Auditory hallucinations: Hearing voices or sounds (such as whispers, shouting, or music).

  • Tactile hallucinations: Feeling sensations on the body, such as insects crawling on the skin, being touched when no one is around, or strange sensations like burning or pressure.

  • Olfactory hallucinations: Smelling smoke, perfume, chemicals, food-related, or foul odors.

  • Gustatory hallucination: Tasting blood, metal, bitter or sweet flavours, or believing oneself to be “tasting” colors.

  • Multisensory hallucinations: Multisensory hallucinations involve more than one sense simultaneously, such as seeing and talking to a figure.

Negative Symptoms

In contrast to positive symptoms such as hallucinations or delusions (which introduce abnormal mental experiences), negative symptoms present as an absence of normal psychological functions.

Negative symptoms are characterized by a diminished expression of typical emotional responses and behaviors. Although these may appear insignificant, negative symptoms can significantly impair an individual's ability to live a fulfilling life.

While the ICD-11 does not list negative psychotic symptoms as a criterion for substance-induced psychotic disorder, the Diagnostic and Statistical Manual for Mental Disorders, Fifth Edition, does. [1] [4]

Negative symptoms may present as:

  • Affective blunting: A noticeable reduction in emotional expression, such as limited facial expressions, gestures, or vocal tone. The individual may appear emotionally flat or detached, even in cases where they are experiencing feelings internally.

  • Anhedonia: A decreased ability to experience pleasure or sustain interest in previously enjoyable activities, such as music, hobbies, or food.

Avolition: Presenting as low motivation, avolition makes it difficult to begin or complete everyday tasks, including essential responsibilities such as cooking, personal hygiene, or attending appointments.

  • Alogia: Limited speech output, often presenting as brief, simple responses. This is not due to an unwillingness to communicate but difficulty in generating thoughts or language.

  • Social withdrawal: A tendency to isolate from family, friends, or social situations, where, despite maintaining interest and care in others, an individual may simply find engagement challenging.

Duration of Substance-Induced Psychosis

Although the DSM-5 and ICD-11 classifications of substance-induced psychotic disorder overlap in terms of key symptoms like hallucinations and delusions resulting from substance use, the guides outline different time periods for psychotic duration. [1] [4]

While the DSM-5 states that SIPD can only be diagnosed if the substance-induced psychotic episode lasts less than one month, the ICD-11 asserts that symptoms should be greatly reduced within one month and fully resolved by six months. [3]

In light of recent findings that have highlighted the limited understanding of substance-induced psychotic disorder, it is possible for substance-induced psychosis to last anywhere from a few hours to several months (even after ceasing substance use). [2]

Causes

Historically, mental health diagnoses have centred around theoretical causes (for example, labeling depression as either a reaction to a major life event or genetic factors). However, since 1980, the psychiatric diagnostic emphasis has shifted, and today, modern medicine is more concerned with describing symptoms than investigating or explaining their cause. [3]

With this in mind, it is interesting to note that a 2021 literature review on substance-induced psychotic disorder states that psychosis following substance use is not concrete evidence that one has caused the other. This theory is based on the fact that a large number of individuals who use substances (including those who use high doses) never develop psychosis. [3]

One of the key challenges in determining the cause of SIPD is that it is not possible for doctors or scientists to establish whether individuals with the condition would have developed psychosis without drug use. Furthermore, the exact causes of most psychiatric conditions remain unclear or highly individual. [3]

That being said, there are a few factors thought to influence the onset of SIPD:

Individual Vulnerability

Research indicates that vulnerability factors (such as genetic predisposition or a history of infections linked to mental illness) may increase the risk of substance-induced psychosis. In other words, individuals with a family history of psychosis are more likely to experience SIP. This highlights that substance use is one of several risk factors, and not the sole cause of SIPD. [3]

Childhood Trauma

Trauma often co-occurs with substance use and psychosis, and research shows that early traumatic experiences (especially childhood sexual abuse and maltreatment) heighten the risk of developing and worsening substance-induced psychosis and primary psychotic disorders later in life. [5]

Present Day Trauma

In psychiatry, trauma and substance use are commonly referred to as a "double hit," which describes how together these factors increase the likelihood and severity of psychotic symptoms more than either factor alone. This compounded effect can explain a substantial portion of psychosis variance in affected individuals (up to 49% in some studies). [5]

Different Substances Affect the Brain Differently

Each substance affects different brain networks, and while the neurobiological effects of cannabis, amphetamines, cocaine, and hallucinogens are well-documented in terms of triggering psychotic episodes, the findings do not fully explain why only some individuals develop substance-induced psychotic disorder. [3]

Drugs Commonly Linked with Psychosis

Substance-induced psychosis can occur as a result of intoxication or withdrawal, and with some substances, both. Additionally, it is important to keep in mind that although certain substances are not linked to psychosis, all of them are linked to the onset of various distressing psychiatric disorders. [1]

Over the past decade, many new types of man-made drugs have emerged (such as synthetic cannabis and opioids, powerful stimulants, new psychedelics, and a wide range of other mind-altering chemicals) that are now being used more and more by individuals who abuse drugs. [2]

As the DSM-5 was published in 2013, this means that newer drugs that now commonly cause psychosis may not be represented in the manual. Additionally, research shows that individuals with drug-induced psychosis are more likely to use multiple substances, suggesting that combining different substances can contribute to the onset of psychosis. [2]

In light of this, it is possible for a person to experience a psychotic episode when unknowingly using a drug that has been laced with another drug. This is sometimes done to dilute the costly psychoactive ingredients and expand profit margin, and at other times in an intentional attempt to expose substance users to different drugs in an effort to trigger new addictions.

According to the DSM-5, the following substances have strong links to psychosis: [1]

  • Alcohol: Alcohol consumption can lead to psychosis either during periods of intoxication or more commonly during withdrawal phases, when the individual ceases to use the substance.

  • Cannabis: Psychotic symptoms associated with cannabis typically arise during intoxication.

  • Hallucinogens: While some hallucinogens may cause persistent effects such as flashbacks or prolonged visual disturbances beyond the immediate intoxication period, hallucinogenic substances primarily trigger psychosis during intoxication.

  • Phencyclidine (PCP): PCP is notorious for causing severe psychosis predominantly during intoxication, with users experiencing hallucinations, delusions, and paranoia, linked directly to the drug’s acute effects.

  • Inhalants: Psychosis induced by inhalants (such as glue or aerosol) typically occurs while an individual is intoxicated.

  • Sedatives, hypnotics, or anxiolytics (eg. benzodiazepines): These substances can provoke psychotic symptoms during intoxication or withdrawal.

  • Stimulants (eg. amphetamines, cocaine): Psychotic episodes linked to stimulant use tend to occur mainly during periods of intoxication when the heightened stimulation affects brain systems responsible for perception and thought.

  • Other or unknown drugs: Various other substances (whether their specific effects are well understood or unknown) have the potential to induce psychosis during either intoxication or withdrawal.

Which Drug Most Commonly Causes Substance-Induced Psychosis?

While a number of drugs have strong links to substance-induced psychosis, numerous studies have found that it is the abuse of multiple substances that most commonly causes SPID. In terms of those who develop psychosis from a single substance, research shows that the following drugs are most often linked to substance-induced psychosis. [2] [6]

Cannabis

According to the World Drug Report, cannabis is the most commonly used drug in the world, with around 244 million global users. While not everyone who uses the drug experiences psychosis, studies estimate that cannabis leads to psychosis in around 60% of users across severity levels, with severely dependent cannabis users at an 80% risk of SIP. [6] [7] [8]

When it comes to plant-derived drugs like cannabis, it is important to keep in mind that different strains contain different amounts of psychoactive compounds that cause intoxication and, in some cases, psychosis. The mind and mood-altering chemical in cannabis is known as THC, with dry herb marijuana typically containing around 20% and stronger forms (such as hash, oil, or edibles) often containing up to 60% of the compound. [6][7]

Amphetamines

Amphetamines increase certain brain chemicals that influence an individual’s mood, energy, and alertness. Common forms of illicit amphetamines include methamphetamine and MDMA (a purer form of ecstasy). Over and above these, prescription amphetamines are approved for short-term use to help with conditions such as ADHD, obesity, and narcolepsy. [6]

Recent research shows that using amphetamines can lead to serious mental health problems, with many users experiencing minor delusions and hallucinations as a result of drug use. In fact, the risk of STID has been found to increase with higher doses and frequent use of amphetamines, and over time, this can lead to full-blown psychosis. [6]

Cocaine

Recent research states that there is an abundance of evidence to support the fact that cocaine can trigger a range of mental health problems, including symptoms of psychosis. Additionally, cocaine is one of the most common drugs linked to short-term paranoia, which can present during psychosis as the result of mild but frightening delusions or hallucinations. [6]

Cocaine affects the brain by blocking the reabsorption of chemicals such as serotonin and noradrenaline, which play a role in regulating mood and alertness. Cocaine is especially popular among adolescents, yet it comes with serious consequences, including increasing the risk of developing long-term psychosis later in life. [6]

Hallucinogens

Hallucinogens, including mescaline, psilocybin ("magic mushrooms"), LSD, and more, are a group of both natural and synthetic substances known to cause hallucinations, which, despite being a key symptom of psychosis, is the primary drawcard for drug users. In light of this, it is not surprising that hallucinogens are linked to episodes of substance-induced psychosis. [6]

Hallucinogens primarily affect the part of the brain responsible for vision, which can cause vivid illusions and dream-like experiences while awake. Although at times these hallucinations can seem enjoyable, it is unpredictable as to whether the experience will be positive or negative, or trigger a psychotic episode. [6]

Can Alcohol Cause Psychosis?

While it is rare for individuals to have a psychotic episode caused by alcohol intoxication, alcohol is the most common substance to cause psychosis during withdrawal, a phenomenon known as delirium tremens (DTs). DTs typically affect those with a history of heavy drinking, particularly individuals who have had severe withdrawal symptoms in the past. [9]

While approximately half of those who misuse alcohol will experience some form of withdrawal upon ceasing use, only around 5% will develop DTs. Delirium tremens are is different from typical alcohol withdrawal and usually presents later in the withdrawal timeline, often between 12 to 48 hours after the last drink. [9]

Early medical attention is crucial, as DTs can be fatal without proper treatment. Symptoms tend to last three or four days, usually resolving within 5 days, although in some cases continuing for eight to ten days. Psychotic symptoms that overlap with delirium tremens include visual, tactile, or auditory hallucinations. [9]

Delirium tremens symptoms other than hallucinations include: [10]

  • Seizures

  • Body tremors

  • Delirium (severe disorientation or confusion)

  • Sudden mood swings

  • Agitation or extreme excitement

  • Irritability and anger

  • Restlessness and inability to stay calm

  • Fatigue or periods of unresponsiveness

  • Difficulty focusing or a short attention span

  • Extreme sensitivity to light, touch, or sound

  • Changes in mental function

Prevention

While it may not be possible to prevent psychosis due to mental health complications, the only way to avoid substance-induced psychotic disorder is to abstain from using substances. Although not all individuals who use drugs experience a psychotic episode, some do, and research has revealed that psychosis is more likely to occur with heavy substance use.

For this reason, many who live with substance use disorder go on to develop SIPD, which increases the risk of developing schizophrenia later in life by 25%. As repeated substance use alters the brain’s reward system to crave drugs in order to feel normal, using illicit substances or medication in larger doses than prescribed can cause SUD to worsen to the point of addiction.

For individuals addicted to substances, the best way to prevent substance-induced psychotic disorder from occurring or recurring is to seek treatment in the form of an inpatient or outpatient facility. These centers provide both therapy and medication, along with support groups (such as Narcotics Anonymous and Alcoholics Anonymous) that have been found to benefit recovery maintenance.

Risks and Complications

Substance-induced psychosis disorder is not just a temporary loss of touch with reality, and can cause serious long-term complications. While some individuals may recover fully from SIP, others face complications that extend far beyond an initial episode, including an increased risk of developing chronic psychiatric conditions such as schizophrenia or bipolar disorder.

Psychotic episodes are also linked to heightened suicide risk, legal problems, trauma, and lasting damage to cognitive function. These risks are exacerbated by continued substance use, whereas early intervention can reduce the impact of SPID and inspire recovery for those with substance use disorder.

Conversion to Primary Psychotic Disorders

Substance-induced psychosis significantly increases the risk of developing chronic primary psychotic disorders such as schizophrenia or bipolar disorder, particularly with continued substance use or prolonged hospital stays. For example, a large study found 46% of people with cannabis-related psychosis later developed schizophrenia, while alcohol-related cases had the lowest risk at 5%. [3]

Higher Risk of Suicide Attempts

In light of the disturbing delusions of some psychotic episodes, along with the severe distress caused by losing touch with reality, there is an elevated risk of suicide attempts during or following substance-induced psychosis. This has been seen particularly in individuals with alcohol use disorder, but may occur as a result of any substance-induced psychotic episode. [11]

Psychiatric Symptoms and Trauma

Compared to primary psychosis, individuals with substance-induced psychosis often display fewer delusions and hallucinations, while struggling with more depressive and anxiety symptoms. However, some individuals experience psychotic symptoms that are interpreted as life-threatening by the brain, which can lead to post-traumatic stress disorder (PTSD). [2] [11]

For most SPID cases, users were significantly more likely to be involved in crimes such as drug possession, disorderly behavior, prostitution, and traffic offenses. Additionally, individuals who used cannabis and especially cocaine were found to be more likely to have committed serious offenses, including major and violent crimes. [11]

Life-Threatening Risky Behaviors

Substance-induced psychosis is associated with increased impulsive and risky behaviors such as unsafe sex and accidents. For example, some individuals with psychosis have delusions of being able to fly, leading them to jump off a tall building and resulting in serious injury or death, without the intention of committing suicide.

Cognitive and Brain Function Impairment

Substance-induced psychosis can cause lasting detrimental effects on brain connectivity, cognitive functions, and intelligence. Studies have revealed that compared to substance users without psychosis, individuals with SPID showed clear signs of thinking and memory problems, along with difficulties in specific brain regions affecting attention, problem-solving, or learning. [12]

Treatment Options

In light of the fact that substance-induced psychosis often arises in the context of heavy or prolonged substance use, effective care may involve not only stabilizing the individual during withdrawal and detoxification but also providing long-term support for mental health in the form of medication and addiction rehabilitation at a dual diagnosis facility.

Hospitalization and Detox

Detoxification, or “detox” as it is more commonly known, is a medically supervised process that assists individuals in managing withdrawal symptoms during the early stages of substance abstinence. This is often a time of intense physical and emotional discomfort, particularly for individuals experiencing psychosis during withdrawal.

During detox, medications are often used to ease psychological distress and prevent dangerous complications (eg. seizures caused by delirium tremens). Medically supervised detox is imperative for stabilizing individuals during withdrawal, particularly for those withdrawing from drugs that may have fatal complications.

After the initial detox process is complete, symptoms of psychosis typically no longer occur, although it is possible for a substance-induced psychotic episode to last for extended periods of time. While detoxification does not cure substance addiction, it supports recovery by helping to stabilize a person’s body and mind, preparing them for ongoing treatment. [10]

Medication

In most cases of substance-induced psychosis, symptoms improve with the discontinuation of a substance and the use of an anxiety-reducing medication (such as a benzodiazepine) or an antipsychotic. Antipsychotic medications are categorized into older treatments (conventional) and newer treatments (second-generation). [13] [14]

Each works by targeting different brain chemicals that assist in managing psychotic symptoms, including hallucinations, delusions, and severe confusion. That said, second-generation antipsychotics (SGAs) may be more effective and are used in 95% of cases in the US with a lower risk of movement-related side effects than conventional antipsychotics. [14]

However, it is unclear whether this applies to the entire group of SGAs, and second-generation psychotics may cause different side effects, such as hypertension, insulin resistance, excess abdominal fat, and more. Furthermore, both SGAs and conventional antipsychotics can affect the heart and increase the risk of serious, potentially fatal irregular heartbeats. [14]

Some conventional and second-generation antipsychotics are available in long-acting injectable forms. These depot medications can be particularly helpful for individuals who struggle with consistently taking daily oral doses due to forgetfulness, lack of insight into their condition, or disorganized thinking. [14]

Dual Diagnosis Treatment Facilities

Emerging research considers substance-induced psychosis as a form of psychotic disorder rather than a side effect solely related to substance use. In light of this, many experts believe that SIPD may benefit more when treated in the same way as primary psychosis, particularly regarding psychosocial support and medication management. [3] [15]

As opposed to primary psychotic disorders, many cases of SIPD may improve over time, and the long-term use of medication might not be necessary once substance use is stopped or reduced. For this reason, traditional approaches to treating substance-induced psychosis prioritize substance cessation. [3] [15]

However, this often results in the psychosis itself receiving less attention, which may lead to missed opportunities for optimal care. In light of this, it is imperative for individuals with both SUD and SIPD to seek treatment at a dual diagnosis facility (skilled in treating both substance addiction and psychiatric complications). [3]

After an individual with substance use disorder has completed a medical detox and psychotic symptoms have been alleviated, the symptoms of addiction can be addressed. This can take place in either an inpatient facility or an outpatient program, but should include therapy and support groups such as Narcotics Anonymous or Alcoholics Anonymous. [10]

Programs such as this can help individuals build the skills needed for a substance-free life, thereby reducing the risk of relapse and future recurrences of SIPD. Continuing to attend these support groups after completing inpatient or outpatient treatment has been found to significantly decrease the risk of relapse. [10]

Substance-Induced Psychotic Disorder FAQs

Is substance-induced psychosis reversible?

Yes, in many cases, substance-induced psychosis is reversible, particularly if the affected individual ceases substance use early and receives professional treatment. Symptoms often improve significantly within days to weeks after detox. However, repeated episodes or continued substance use can increase the risk of lasting psychiatric conditions such as schizophrenia.

How can you recognize substance-induced psychosis in someone?

When an individual has drug-induced psychosis, they may experience sensory perceptions that are not real (hallucinations), such as feeling insects crawling on their skin or seeing rats that are not there. The person may also hold false beliefs (delusions) that often involve fears of being harmed, but may also lead them to believe they have supernatural abilities.

What are the three phases of substance-induced psychosis?

The first phase of SIP is the onset, where symptoms (including paranoid or grandiose delusions and hallucinations) begin, often while the person is intoxicated or experiencing withdrawal. The second stage of SIP is the acute phase, where symptoms are most disruptive. The third is the resolution phase, during which symptoms fade, typically after ceasing substance use.

Can the brain recover after drug-induced psychosis?

Yes, the brain often heals over time, particularly when substance use is discontinued and professional treatment is received. The balance of brain chemicals can be restored, and cognitive functions may improve. However, recovery may take longer in cases of prolonged or heavy substance use.

What are the early signs that someone might be experiencing drug-induced psychosis?

Early warning signs of SIP may include suspiciousness, withdrawal from others, nonsensical or confused speech, and changes in mood or behavior. The affected individual may also begin to experience perceptual disturbances, such as hearing whispers or seeing shadows. These symptoms can appear subtly and gradually before progressing into full-blown psychosis.

What is the best way to support someone going through drug-related psychosis?

The best way to help someone with SIP is to ensure that they are in a safe environment and avoid disagreeing with their delusions, which will only distress them further. Instead, encourage the individual to seek professional help immediately or stage an intervention if the person is in danger. Long-term support includes addiction treatment and support groups for those with SUD.

Final Thoughts

Substance-induced psychotic disorder (SIPD) is a complex psychiatric condition characterized by hallucinations and delusions caused by substance use or withdrawal, and not a primary psychotic illness.

While symptoms often resolve with substance cessation and detoxification, prolonged or repeated psychotic episodes (especially in those with substance use disorder) increase the risk of developing chronic psychotic disorders such as schizophrenia.

For those with an addiction to substances, effective treatment requires not only managing psychotic symptoms with medication and supervision, but supporting addiction recovery and relapse prevention.

Early identification and dual diagnosis treatment are crucial to improving outcomes, minimizing complications, and teaching recovering addicts coping skills, including ongoing attendance at support groups like Narcotics Anonymous or Alcoholics Anonymous.

With the right combination of medical care, psychological support, and a commitment to lasting change, recovery from substance-induced psychotic disorder is not only possible, but transformative.

References

  1. 1.

    Diagnostic and statistical manual of mental disorders (5th ed.)

    American Psychiatric Association. (2013). Diagnostic and statistical manual of mental disorders (5th ed.). https://psychiatryonline.org/doi/book/10.1176/appi.books.9780890425596

    Source: American Psychiatric Association

  2. 2.

    Substance-Induced Psychoses: An Updated Literature Review

    Fiorentini, A., Cantù, F., Crisanti, C., Cereda, G., Oldani, L., & Brambilla, P. (2021). Substance-Induced Psychoses: An Updated Literature Review. Frontiers in Psychiatry, 12(12). https://www.frontiersin.org/journals/psychiatry/articles/10.3389/fpsyt.2021.694863/full

    Source: Frontiers in Psychiatry

  3. 3.

    Discussing the concept of substance-induced psychosis (SIP)

    Bramness, J. G., Carsten Hjorthøj, Solja Niemelä, Taipale, H., & Eline Borger Rognli. (2024). Discussing the concept of substance-induced psychosis (SIP). Psychological Medicine, 1–5. https://www.cambridge.org/core/journals/psychological-medicine/article/discussing-the-concept-of-substanceinduced-psychosis-sip/6BE707ECDAD908CB61BC24A25852C79A

    Source: Psychological Medicine

  4. 4.

    ICD-11 for Mortality and Morbidity Statistics

    ICD-11 for Mortality and Morbidity Statistics. (2025). Who.int. https://icd.who.int/browse/2025-01/mms/en#173259898

    Source: World Health Organization

  5. 5.

    Childhood trauma and substance use underlying psychosis: a systematic review

    Setién-Suero, E., Suárez-Pinilla, P., Ferro, A., Tabarés-Seisdedos, R., Crespo-Facorro, B., & Ayesa-Arriola, R. (2020). Childhood trauma and substance use underlying psychosis: a systematic review. European Journal of Psychotraumatology, 11(1), 1748342. https://www.tandfonline.com/doi/full/10.1080/20008198.2020.1748342

    Source: European Journal of Psychotraumatology

  6. 6.

    Substances led to Psychosis: A Systematic Review

    Substances led to Psychosis: A Systematic Review. (n.d.). Openpsychologyjournal.com. https://openpsychologyjournal.com/VOLUME/17/ELOCATOR/e18743501297735/FULLTEXT/

    Source: Open Psychology Journal

  7. 7.

    World Drug Report 2025: Crisis and Opportunity

    Bremond, P. (2025, June 27). World Drug Report 2025: Crisis and Opportunity - Dianova. Dianova. https://www.dianova.org/news/world-drug-report-2025-crisis-and-opportunity/

    Source: Dianova

  8. 8.

    Prevalence of psychotic symptoms in substance users: a comparison across substances

    Smith, M. J., Thirthalli, J., Abdallah, A. B., Murray, R. M., & Cottler, L. B. (2009). Prevalence of psychotic symptoms in substance users: a comparison across substances. Comprehensive Psychiatry, 50(3), 245–250. https://www.sciencedirect.com/science/article/abs/pii/S0010440X08001107?via%3Dihub

    Source: Comprehensive Psychiatry

  9. 9.

    Delirium Tremens: Symptoms, Timeline & Treatment

    Miller, L. (2024, June 18). Delirium Tremens: Symptoms, Timeline & Treatment. American Addiction Centers. https://americanaddictioncenters.org/alcohol/withdrawal-detox/delirium-tremens

    Source: American Addiction Centers

  10. 10.

    Substance Induced psychosis | drug Induced Psychosis Treatment

    Thomas, S. (2019). Substance Induced psychosis | drug Induced Psychosis Treatment. American Addiction Centers. https://americanaddictioncenters.org/co-occurring-disorders/drug-psychosis-comorbidity

    Source: American Addiction Centers

  11. 11.

    The prevalence and clinical correlates of substance use disorders in patients with psychotic disorders from an Upper-Middle-Income Country

    Temmingh, H. S., Mall, S., Howells, F. M., Goodman Sibeko, & Stein, D. J. (2020). The prevalence and clinical correlates of substance use disorders in patients with psychotic disorders from an Upper-Middle-Income Country. South African Journal of Psychiatry, 26(0), 9. https://sajp.org.za/index.php/sajp/article/view/1473/1731

    Source: South African Journal of Psychiatry

  12. 12.

    Substance-induced psychosis and cognitive functioning: A systematic review

    Gicas, K. M., Parmar, P. K., Fabiano, G. F., & Mashhadi, F. (2022). Substance-induced psychosis and cognitive functioning: A systematic review. Psychiatry Research, 308, 114361. https://www.sciencedirect.com/science/article/abs/pii/S0165178121006557?via%3Dihub

    Source: Psychiatry Research

  13. 13.

    Substance-/Medication-Induced Psychotic Disorder

    tamminga, carol. (2022). Substance-/Medication-Induced Psychotic Disorder - Psychiatric Disorders. MSD Manual Professional Edition. https://www.msdmanuals.com/professional/psychiatric-disorders/schizophrenia-and-related-disorders/substance-medication-induced-psychotic-disorder

    Source: MSD Manual Professional Edition

  14. 14.

    Antipsychotic Drugs

    Antipsychotic Drugs - Psychiatric Disorders. (n.d.). MSD Manual Professional Edition. https://www.msdmanuals.com/professional/psychiatric-disorders/schizophrenia-and-related-disorders/antipsychotic-drugs

    Source: MSD Manual Professional Edition

  15. 15.

    SIPD or psychotic disorder with stimulant use

    Lecomte, T., Lang, D., Potvin, S., Diotte, F., Livet, A., Cimaglia, M., Abdel-Baki, A., Villeneuve, M., Jutras-Aswad, D., & Spidel, A. (2025). SIPD or psychotic disorder with stimulant use. Schizophrenia Research: Cognition, 39, 100332. https://www.sciencedirect.com/science/article/pii/S2215001324000337?via%3Dihub

    Source: Schizophrenia Research: Cognition

Star Gorven

Author

Star Gorven

Star Gorven is a wellness and mental health writer with a talent for crafting evocative and evidence-based content across a wide range of topics. Her work blends analytical research with imagination and personality, offering thoughtful insights drawn from her exploration of subjects such as psychology, philosophy, spirituality, and holistic wellbeing.

Activity History - Last updated: March 19, 2026, Published date: March 19, 2026


Kaye Smith

Reviewer

Dr. Smith is a behavioral health coach, clinician, writer, and educator with over 15 years of experience in psychotherapy, coaching, teaching, and writing.

Activity History - Medically reviewed on April 1, 2026 and last checked on March 19, 2026