Substance abuse among the chronic mentally ill

Area of Science:

• Psychiatry
• Clinical Psychology
• Public Health

Background:

• Chronic mental illness presents significant challenges for community living.
• Substance abuse is a common co-occurring condition in this population.
• Understanding the impact of dual diagnosis is crucial for effective treatment.

Purpose of the Study:

• To examine the prevalence of substance abuse in a community-based sample of chronically mentally ill patients.
• To identify differences between dually diagnosed patients and those with mental illness alone.
• To assess the impact of substance abuse on rehospitalization rates.

Main Methods:

• A cohort of 187 chronically mentally ill patients living in the community was evaluated.
• Aftercare clinicians rated substance abuse (alcohol, street drugs, or both) over a six-month period.
• Patient characteristics, community functioning, symptomology, medication compliance, and rehospitalization were assessed.

Main Results:

• One-third of the sample reported substance abuse.
• Dually diagnosed patients were younger, more often male, and had poorer community functioning (meals, finances, housing, activities).
• Dually diagnosed patients exhibited increased hostility, suicidality, speech disorganization, poorer medication compliance, and were nearly twice as likely to be rehospitalized.

Conclusions:

• Substance abuse exacerbates the challenges of chronic mental illness.
• Dual diagnosis is associated with significant functional impairments and increased risk of rehospitalization.
• Integrated treatment approaches are needed for individuals with co-occurring substance abuse and mental illness.