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Intermediate Technical In the Industry Vocabulary Test

co-occurring disorders

Also written as: COD

The simultaneous presence of substance use disorder and mental illness in the same individual.

Full Definition

Co-occurring disorders, also known as dual diagnosis or comorbidity, refers to the condition where an individual has both a substance use disorder and a mental health disorder simultaneously. These conditions interact and often complicate each other, requiring integrated treatment approaches rather than treating each condition separately. Common combinations include depression with alcohol use disorder, PTSD with opioid use disorder, or bipolar disorder with cocaine use disorder. Integrated treatment addressing both conditions simultaneously produces better outcomes than sequential treatment.

Usage

Usage note: Hyphenate 'co-occurring' in all uses; preferred over 'dual diagnosis' in professional contexts for its specificity.

In Context

  • "The clinic specialized in treating patients with co-occurring disorders through integrated programming." — facility description
  • "Research indicates that 50% of individuals with severe mental illness also have co-occurring disorders." — epidemiological study

Also known as

dual diagnosis comorbid disorders concurrent disorders

Contrasted with

single diagnosis

Don't confuse with

co-morbidity dual disorder
Clinical Holding ← Back to glossary Concurrent Review

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