Treating psychosis involves education, counselling, medication, close monitoring of symptoms, stress management, and a strong, supportive environment.

Out-patient services are made up of interdisciplinary teams that offer assertive community treatment (ACT) and variable community follow-up (SIV for Suivi d’intensité variable)for people suffering from psychotic disorders.

The Prevention and Early Intervention Program for Psychosis (PEPP-Montréal) is a program for young people who are experiencing an untreated first episode of psychosis.

The Psychotic Disorders Program at the Douglas Institute provides services to adults aged 18 to 65 with schizophrenia or other forms of psychoses, with the exception of the Prevention and Early Intervention Program for Psychoses (PEPP-Montréal), which is designed for people aged 14 to 30.

The Bipolar Disorders Program is a superspecialized (third-line) consultation and treatment service for adults aged 18 to 65 who suffer from refractory bipolar disorders.

The Mood, Anxiety and Impulsivity Disorders Program at the Douglas Institute provides care to people aged 18 to 65 years with a mood disorder such as Bipolar disorders or Depressive and suicide disorders.

The Program for Dementia with Psychiatric Comorbidity (PDCP) provides superspecialized care to people of all ages who have mild to severe cognitive impairments combined with psychiatric or behavioural disorders.

There are three external service points in the geriatric psychiatry program.

The Geriatric Psychiatry Program at the Douglas Institute provides services to clients aged 65 and older and to adults younger than 65 with a geriatric profile. The program covers psychiatric diagnoses such as: mood disorders anxiety di

Outpatient clinics for children 18 and undre include the Pervasive Developmental Disorders (PDD) Diagnostic Clinic, the Depressive Disorders Clinic and the Child Psychiatry Outpatient Clinic.