How Long Does Cannabis Psychosis Last?
Cannabis psychosis most often lasts from a few hours to several days. If a doctor diagnoses cannabis-induced psychotic disorder, symptoms can last weeks to months. Most people improve within 1 to 4 weeks after they stop using cannabis. A smaller number have symptoms that persist beyond 6 months.
symptoms of cannabis psychosis
What Counts as Cannabis Psychosis
Cannabis psychosis is a set of psychotic symptoms that start during or soon after cannabis use. Symptoms include hallucinations, delusions, paranoia, and disorganized thinking. The symptoms are not due to another medical condition or another drug. Doctors use the DSM-5-TR to make the diagnosis.
Timeline by Severity
- Acute intoxication: Hallucinations or paranoia peak within 30 minutes to 2 hours. They fade as THC leaves the body, within 6 to 12 hours in many cases.
- Cannabis-induced psychotic disorder: Symptoms last longer than the drug's direct effects. They can continue for days or weeks. Most cases resolve within 1 to 4 weeks after stopping use.
- Persistent psychosis: Some people have symptoms that last 6 months or more. This outcome is more common with daily use of high-THC products.
What Changes the Timeline
Several factors affect how long symptoms last:
- THC dose and potency. Concentrates and edibles can deliver large amounts.
- How often you use and how long you have used.
- Age at first use. Teen use raises risk.
- Family history of psychosis or schizophrenia.
- Use of other drugs or alcohol.
- Sleep loss and stress.
What to Do
Follow these steps if you or someone you know has symptoms after using cannabis.
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- Stop all cannabis use.
- Remove cannabis products from your home.
- Track symptoms with times and dates.
- Write down the product and amount used.
- Call a doctor or mental health professional if symptoms last more than 24 hours.
- Go to an emergency room if there is a risk of self-harm, severe confusion, or the person cannot stay safe.
- Ask about a referral to a psychiatrist or addiction specialist for ongoing care.
When to Get Help
Get help right away if hallucinations or delusions do not stop after 24 hours. Also get help if the person talks about suicide, hears voices that command action, or becomes catatonic. Early treatment lowers the risk of long-term problems.
Outlook
Most people recover after they stop using cannabis. Recovery time depends on how long symptoms lasted and how soon treatment started. Some people need several weeks of care. People with a history of psychosis should avoid cannabis, including high-CBD products. CBD may not block THC effects in all cases.