The term "dual diagnosis" is generally used when someone suffers from both:

• a mental disorder (e.g. a mood or psychotic disorder); and

• problems with substance use.

External links

UK sites:

MIND booklet on dual diagnosis

Department of Health: "Mental health policy implementation guide: Dual diagnosis good practice guide"

US government sites:

Medicine Plus website

SAMHSA National Mental Health Information Center: "Integrated Dual Diagnosis Treatment"