Bipolar Disorder Bipolar Spectrum Disorder

Bipolar disorder, also known as bipolar affective disorder, manic-depressive disorder, or manic depression, is a mental illness classified by psychiatrists as a mood disorder.

How common is bipolar spectrum disorder?

Bipolar spectrum disorder encompasses the following diagnoses and frequency in the population.

  • Bipolar I = 1-2%
  • Bipolar II = 1-5%
  • Bipolar, NOS = 2-5%
  • Cyclothymia = 1-3%