A psychological disorder and how co-morbidity (dual diagnoses) may play a role

Identify a psychological disorder and how co-morbidity (dual diagnoses) may play a role. For example, how
someone with depression may also be diagnosed with a substance abuse disorder (as they may be using
the symptoms to cope). Define the interactions between the dual diagnoses.

Criteria should be met: Concept is clearly defined in a minimum of two paragraphs, a professional
reference is implemented, i.e., or a reference from a journal in the library, a citation is included. An
example, applying the concepts is cohesively applied.