Bipolar Disorder - Differential Diagnoses

 Following organic and functional disorders might mimic symptoms of Bipolar Disorder

• Anxiety disorders (ex. generalized anxiety disorder, panic disorder etc.)
• Hyperthyroidism
• Cushing's disease/ syndrome
• Multiple sclerosis
• Post Traumatic Stress Disorder
• Schizo-affective disorder
• Schizophrenia
• Attention Deficit Hyperactivity Disorder

Ref: 

1. World Health Organization(WHO). (1993). The ICD-10 classification of mental and behavioural disorders. World Health Organization.
2. Price AL, Marzani-Nissen GR. Bipolar disorders: a review. Am Fam Physician. 2012 Mar 1. 85(5):483-93