Substance-Induced Disorders

What Is a Substance-Induced Disorder?

A substance-induced mental disorder is a change in mood, thinking, how someone experiences the world, or behavior caused by alcohol, another substance or a medication. Symptoms can also develop during withdrawal, when someone reduces or stops a substance.^[1]

Symptoms can resemble depression, anxiety, bipolar disorder or psychosis, which can involve hearing voices or having beliefs that do not match reality. A healthcare professional needs to assess the cause rather than assume that substance use explains every symptom.^[1]

The term does not necessarily mean someone has an addiction or has misused a medicine. Prescribed medicines can also affect mental health, even when someone takes them as directed. Equally, a person can have a substance-induced condition alongside a substance use disorder or an independent mental health condition.^[2][1]

If symptoms appeared after starting, changing or stopping a substance or medicine, tell a healthcare professional. The timing is useful information, but it is not a diagnosis by itself. Assessment and symptom care can begin while the cause is still being clarified.^[1]

When to Get Urgent Help

Call 911 for a seizure, loss of consciousness, severe breathing difficulty or immediate danger. Sudden severe confusion also needs urgent medical assessment. Do not assume these changes are simply anxiety or an expected part of withdrawal.^[7][8][4]

If someone cannot be awakened or has slow, shallow or abnormal breathing after possible opioid use, treat it as a possible overdose. Give naloxone if available, call 911 and stay with the person until help arrives. Follow the dispatcher’s instructions.^[7]

New hallucinations (such as hearing voices others do not hear), delusions (strongly held beliefs that do not match reality), or major behavior changes need prompt assessment. This is especially important if someone cannot care for themselves or stay safe. Possible causes include substance effects, a separate mental health condition or another medical problem.^[9][10]

If you or someone you know is struggling or having thoughts of suicide, call or text 988 or visit 988lifeline.org. Call 911 in a life-threatening emergency.^[3]

Substance-Induced Disorders and Substance Use Disorder

A substance use disorder describes a pattern of use that causes significant problems. It may involve difficulty controlling use, using more than intended or continuing despite harm. A substance-induced mental disorder describes mental health symptoms caused by a substance or medicine. One diagnosis concerns the pattern of use. The other concerns what caused the mental health symptoms.^[3][1]

An independent mental disorder is not explained by the direct effects of a substance. When it occurs alongside a substance use disorder, clinicians often use the terms co-occurring disorders or dual diagnosis. These conditions can occur together, so the clinician needs to consider the full history.^[1]

Symptoms and Types of Substance-Induced Disorders

Substance-related problems include intoxication, withdrawal and other substance-induced disorders. Intoxication means changes caused by recent substance use. Withdrawal means symptoms that occur after reducing or stopping a substance. A substance-induced mental disorder causes distress or problems with daily life beyond the effects ordinarily expected during use or withdrawal. It needs its own assessment.^[1]

Symptoms alone cannot establish the cause. A clinician considers what was taken, when symptoms began, prior mental health symptoms, physical health and how the condition changes over time.^[1][10]

Substance-Induced Depression

Depressive symptoms can include sadness, loss of interest, low energy, sleep or appetite changes, difficulty concentrating, and feelings of guilt or worthlessness. Thoughts of death or suicide need attention regardless of whether a substance is involved. These symptoms can look similar to an independent depressive disorder.^[10]

Alcohol and other substances can contribute to depressive symptoms during use or withdrawal. For some people, symptoms ease as recovery progresses. Others need ongoing assessment and treatment. An uncertain cause is not a reason to withhold support or ignore depression.^[1]

Substance-Induced Anxiety Disorder

Substance-induced anxiety can involve substantial fear, worry, tension or panic-like symptoms. The relationship to intoxication or withdrawal matters. Alcohol, stimulants and other substances can produce anxiety symptoms, but an independent anxiety disorder may also be present.^[1]

Anxiety can affect the body as well as thoughts. Irritability, muscle tension, fatigue, poor sleep and difficulty relaxing may accompany worry. Describe these changes during assessment rather than assuming that every physical symptom is anxiety.^[10]

For example, alcohol-related anxiety can intensify between drinking episodes or during withdrawal. Clinicians ask whether anxiety began before drinking, how it behaves during periods without alcohol and whether there is a family history of anxiety. This helps guide care without relying on a single symptom checklist.^[10]

Substance-Induced Psychotic Disorder

Psychosis can involve hallucinations, such as hearing things others do not hear, or delusions, meaning strongly held beliefs that do not match shared reality. The clinician distinguishes substance-induced psychosis from delirium, a sudden change in attention and awareness, and from effects ordinarily expected during intoxication or withdrawal.^[9]

Some episodes resolve relatively quickly, while others persist. A history of substance use does not rule out schizophrenia or another cause. A clinician needs to ask about earlier symptoms and examine the person for medical explanations when appropriate.^[9][10]

Substance-Induced Mood and Bipolar Symptoms

People sometimes use substance-induced mood disorder as a broad term. A clinician checks whether symptoms follow a pattern of depression or bipolar symptoms, rather than treating every mood change as the same condition.^[1]

Manic symptoms may include an unusually elevated or irritable mood together with increased energy and activity. Changes in sleep, behavior and judgment can interfere with relationships, work or safety. A clinician assesses the whole episode and its timing in relation to substances and medicines.^[10][1]

When stimulants cause manic symptoms, a person may talk rapidly, jump between ideas, feel unusually powerful or confident, and have major sleep disruption. These changes can become severe. Urgent mental health assessment is needed when mania includes psychosis, acting on impulses in ways that put someone in danger or an inability to stay safe.^[1]

It is not safe to assume that mood symptoms will always disappear when use stops. The person may have an independent condition such as bipolar disorder, substance-related symptoms that need continued care, or both.^[1]

Sleep Problems

Substances can affect the ability to fall asleep, stay asleep or feel alert during the day. Alcohol can disrupt normal sleep patterns and aggravate breathing-related sleep problems. Sleep difficulties can also continue into recovery, making their timing and pattern useful parts of an assessment.^[10]

Tell the clinician about alcohol, other substances, sleep medicines and changes in their use. New or worsening sleep problems should not automatically be treated by adding another substance that causes drowsiness. For example, Halcion’s prescribing information says that ongoing difficulty sleeping needs evaluation. It also warns about combining Halcion with alcohol or other substances that slow activity in the brain and nervous system.^[5]

Delirium and Cognitive Changes

Delirium is a sudden change in attention, awareness and thinking. A person may seem confused, unusually sleepy or agitated, and symptoms may improve and worsen during the day. Alcohol or drug intoxication, withdrawal, medicine effects, dehydration and infections are among possible causes. It requires medical assessment rather than being dismissed as ordinary intoxication.^[8]

Longer-lasting problems with thinking or memory also need evaluation. Some substance-related conditions affect thinking and memory after the immediate effects of use or withdrawal have passed. Clinicians call these neurocognitive conditions. An assessment helps distinguish them from delirium and other causes of thinking or memory problems.^[2]

Sexual Function and Other Symptoms

Substances or medicines can contribute to difficulties with sexual function. Changes may involve desire, arousal, erections, ejaculation or orgasm. Other health conditions, stress and relationship concerns can also contribute, so symptoms should be assessed rather than automatically attributed to a medicine.^[11][12]

If a change started after a prescription was introduced or adjusted, discuss the timing with its prescriber. They can review possible alternatives or adjustments. Do not stop a medicine on your own because of a suspected side effect.^[12][6]

Substance- or medication-induced obsessive-compulsive and related disorders are another recognized category. Symptoms that continue, even if they do not fit the more familiar mood or anxiety examples, still deserve assessment.^[2]

Obsessions are recurring thoughts that feel difficult to control. Compulsions are repetitive behaviors that become excessive. A clinician needs to assess these symptoms and their cause, rather than assume that any repeated thought or action is a disorder.^[13]

Which Substances and Medicines Can Be Involved?

Different substances have different effects during use and withdrawal. A substance that can cause one type of mental health symptom does not necessarily cause every type. The amount, pattern of use, other substances and a person’s health history help the clinician interpret symptoms.^[1]

Examples include alcohol, caffeine, cannabis, stimulants such as cocaine and amphetamines, hallucinogens, inhalants, opioids and sedatives. Prescribed medicines also belong in the history. Avoid assuming that something is unrelated because it is legal or prescribed.^[1][2]

The timing of symptoms helps make these examples meaningful.

• Alcohol: Anxiety can rise between drinking episodes or during withdrawal. Depressive symptoms can occur during use or withdrawal.^[10][1]
• Stimulants: Cocaine and amphetamines can produce anxiety or manic-like symptoms during intoxication. Withdrawal can bring marked depression and loss of pleasure.^[1]
• Cannabis and hallucinogens: These can be associated with anxiety or psychotic symptoms during intoxication. A clinician distinguishes expected substance effects from a separate psychiatric disorder.^[1][9]
• Benzodiazepines and other sedatives: Withdrawal can include anxiety, mood changes and sleep problems. Abruptly stopping a benzodiazepine after continued use can cause dangerous reactions, including seizures.^[1][5]

Bring the names of medicines, supplements and substances used, including changes in dose or how often you use them. Explain when symptoms began and whether they appeared during use, after reducing use or after stopping. Include symptoms that occurred before substance use began.^[10][1][6]

It is also useful to describe the effect on sleep, work, relationships and everyday responsibilities. These details help the clinician understand what support you need now.^[10]

How Substance-Induced Disorders Are Diagnosed

Diagnosis depends on how symptoms relate to what someone took, not simply whether they have used a substance. Clinicians assess whether the substance or medicine can cause the symptoms and whether another mental or medical condition better explains it.^[1]

For many substance-induced mental disorders, symptoms develop during or soon after intoxication, withdrawal or taking a medicine. The diagnostic framework considers a period of about a month in that relationship, but it is not a universal “30 days after any use” test. Some lasting changes in vision, thinking or memory need to be considered differently.^[1]

The assessment may involve a symptom history, physical examination and tests when needed. For psychosis or sudden confusion, medical causes must also be considered. Tell the clinician about previous diagnoses, treatments and episodes, including symptoms that occurred before substance use.^[8][10]

Why Follow-Up Matters

An initial diagnosis may change as a clinician observes symptoms over time. Some people initially thought to have only substance-induced symptoms also have an independent mental disorder. Follow-up can clarify this while the care team continues addressing symptoms and substance-related needs.^[1]

You should not be expected to go without help until the cause is certain. Symptoms can be treated and safety needs addressed during the assessment process.^[1]

How Long Can Symptoms Last?

There is no single recovery timeline for all substance-induced disorders. How symptoms change depends on the substance, the type of symptoms and the person’s other health needs. Depressive symptoms may change over weeks or months of recovery, while some problems with vision, thinking or memory can be longer-lasting.^[1][2]

Persistent symptoms deserve reassessment. They do not establish a lack of effort or commitment, and they should not be treated as proof of a permanent condition without evaluation. Ask the care team what changes to expect, when follow-up is planned and which symptoms require earlier help.^[1]

Treatment for Substance-Induced Disorders

Treatment addresses the symptoms, the suspected substance or medication effect, and any other condition present at the same time. A person may need medical assessment, a supervised withdrawal plan, therapy, medication or several forms of support. Care should match the person’s needs rather than a single program label.^[3][14]

Safe Withdrawal and Medication Changes

Do not use abrupt stopping as a home test to see whether symptoms improve. Alcohol withdrawal after prolonged heavy drinking can be dangerous. Benzodiazepine withdrawal after continued use can also be life-threatening, especially when someone stops suddenly or reduces the dose quickly. A clinician should help plan any needed change.^[4][5]

For some people, care includes medical detoxification, which means medical support while a person goes through withdrawal, or another setting with close health checks. Others can receive care through planned appointments. The decision depends on the person’s symptoms, risks and available support. Ask what medical supervision the program actually provides.^[14][4]

Treatment for Mental Health Symptoms

A clinician may use medication for specific symptoms or an identified condition. For substance-induced psychosis, treatment can include an antipsychotic (medicine used to reduce symptoms such as hallucinations and delusions) and a calm environment. The approach depends on the cause and the person’s needs. Medication choices require assessment rather than a standard prescription for everyone.^[9][6]

If an independent mood or anxiety disorder is present, that may need treatment alongside the substance-related problem. When providers plan care together, they can check how medicines affect one another, watch for side effects and respond to changing symptoms.^[3][10]

Therapy and Ongoing Support

Therapy can help people build coping skills, change substance use patterns and manage mental health symptoms. Family involvement can also help. The approach should fit the person’s needs and treatment goals.^[3]

These therapy names describe different ways of working toward change:

• Cognitive behavioral therapy (CBT): You learn to recognize situations in which you are likely to use substances and practice ways to avoid or cope with them.^[15]
• Motivational interviewing: You talk through what substance use does for you, its downsides and what you want to change. The therapist helps you explore choices and make your own decisions.^[16]
• Contingency management: A program offers rewards for agreed treatment goals, such as attending counseling, taking medicine as prescribed or not using a substance.^[15]

Treatment for an alcohol or opioid use disorder may include medication as well as behavioral care. Addressing only the mental health symptoms may leave important substance-related needs untreated. Ask how the treatment team coordinates these parts of care.^[3][10]

Discussing care for people with both serious mental illness and a substance use disorder, University of Michigan psychologist Lara Coughlin, PhD, emphasized “treating the whole person” rather than relying on disconnected referrals. Her point applies to how services work together, not to diagnosing the cause of your symptoms.^[16]

You can ask: “Who is helping with my mental health symptoms, who is helping with substance use, and how will they communicate?” Ask for names or roles you can contact, rather than relying only on the phrase “coordinated care.”

Outpatient, Residential and Hospital Care

Outpatient care means attending treatment and leaving the same day. This can be a regular appointment or a longer program. Intensive outpatient and partial hospitalization programs may include individual sessions, groups and coping-skills work over several hours. Ask about the actual schedule and medical support, because programs differ.^[14]

Inpatient care includes staying overnight at a hospital or treatment program, usually when someone needs 24-hour care. Residential care means living at a treatment program. A residential program may offer a different amount of medical support from a hospital, so ask what care is available on site.^[14]

When comparing levels of addiction care, confirm whether a program can assess your mental health symptoms, manage withdrawal when needed and arrange more intensive care if symptoms worsen.

Related Conditions After Substance Use

Hallucinogen Persisting Perception Disorder

Hallucinogen persisting perception disorder, or HPPD, involves changes in what a person sees that return or continue after substance use has ended. These changes cause substantial distress or interfere with daily life. Examples can include trails behind moving objects, afterimages, flashes or other changes in how things look. Assessment helps distinguish these symptoms from other explanations.^[17]

Some researchers use “type 1” and “type 2” labels, but these are not two established forms in the DSM, the manual clinicians use to diagnose mental health conditions. Evidence about treatment is limited.^[17]

For example, Ford and colleagues looked back at records of people with HPPD and reviewed published case reports. Describing what happened to a small group can help identify patterns. It cannot predict your outcome or show which medicine works best.^[17]

Cannabinoid Hyperemesis Syndrome

Cannabinoid hyperemesis syndrome, or CHS, is a physical condition associated with frequent cannabis use. It involves repeated attacks of nausea and vomiting, often with abdominal pain. It belongs in a discussion of substance-related health problems, but it is a physical illness, distinct from mental health conditions such as substance-induced depression.^[18]

CHS needs medical assessment because other conditions can cause similar symptoms. Get help promptly if you cannot keep fluids down, feel very weak or dizzy, or urinate much less than usual. Stopping cannabis is central to treating CHS, with medical care for symptoms and support for stopping when needed.^[18]

Finding Care Near You or Online

Start with a primary care professional, mental health clinician or addiction specialist who can assess both the symptoms and substance history. You can search FindTreatment.gov for mental health and substance use services. Contact the provider to confirm what they treat, costs, eligibility and appointment availability.^[3]

When Online Treatment May Fit

Online services may include assessment, therapy, medication appointments or follow-up, depending on the provider. Ask about experience with your symptoms, privacy, insurance and who arranges in-person care when you need it. A convenient platform still needs to fit the treatment plan.^[19]

Online counseling alone does not provide emergency medical care or on-site withdrawal monitoring. If withdrawal risk, sudden confusion or a possible overdose is present, get the appropriate medical assessment first. Discuss which online addiction treatment options fit your ongoing care needs.^[4][8][7]

Supporting Someone With Substance-Induced Symptoms

Focus the conversation on changes you have noticed and the help the person needs, rather than trying to settle the diagnosis. You might offer to help write down the symptom timeline, find a provider or prepare questions for an appointment.

Ask the care team how family members can participate with the person’s permission. Therapy that involves the family can help people communicate and work on problems affecting both substance use and mental health. Supporters can also seek help for their own needs.^[3]

For immediate danger, possible overdose or sudden severe confusion, seek urgent medical help. A routine counseling appointment is not a substitute for emergency assessment.^[7][8][3]