The most common comorbid illness with depression is
Substance use disorder is the commonest comorbid psychiatric illness. The other impoant ones are panic disorder, social anxiety and OCD. Substance use is more common in men depressives and anxiety in women depressives. Bipolar disorder patients have twice the rates of prevalence, in comparison to the unipolar depressive patients.
Anxiety disorder
Substance use disorder
Obsessive-compulsive disorder
Comorbid illnesses are rare
Mood Disorders