Schizophrenia and Substance Abuse Treatment in California
Specialized dual-diagnosis treatment for co-occurring schizophrenia spectrum disorders and substance use disorder at Keystone Health Group.
Schizophrenia and other psychotic disorders are among the most serious mental health conditions, and they co-occur with substance use disorder at very high rates — approximately 50% of people with schizophrenia have a lifetime substance use disorder. Cannabis, alcohol, and stimulants are the most commonly used substances. Substance use dramatically worsens schizophrenia outcomes — increasing psychotic symptoms, reducing medication adherence, and increasing hospitalization rates. At Keystone Health Group, our clinical team provides specialized treatment for co-occurring schizophrenia and addiction.
Substance Use and Psychosis
Substance use — particularly cannabis, stimulants, and hallucinogens — can trigger or worsen psychotic symptoms in people with schizophrenia. Cannabis use is particularly concerning: high-potency THC is strongly associated with psychosis, and cannabis use in people with schizophrenia significantly worsens outcomes. Our clinical team assesses and manages substance-related psychosis as part of the treatment plan.
Antipsychotic Medication Management
Antipsychotic medications are the cornerstone of schizophrenia treatment. Our psychiatrists manage antipsychotic medications during addiction treatment, ensuring that psychotic symptoms are adequately controlled while minimizing side effects. Long-acting injectable antipsychotics may be recommended for clients with a history of medication non-adherence.
Integrated Treatment
Integrated treatment for co-occurring schizophrenia and addiction — addressing both conditions in the same treatment setting by the same team — is the evidence-based standard. Our clinical team is trained in integrated dual-diagnosis treatment for serious mental illness and addiction.
Signs & Symptoms of Addiction
Our Treatment Approach
Frequently Asked Questions
Can people with schizophrenia recover from addiction?
Yes. With appropriate integrated treatment, people with co-occurring schizophrenia and addiction can achieve meaningful recovery from both conditions.
Does cannabis cause schizophrenia?
Cannabis does not cause schizophrenia in everyone, but it significantly increases the risk in genetically predisposed individuals and worsens outcomes in people who already have schizophrenia.
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