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What is Bipolar I Disorder?

By Kimberly Read & Marcia Purse, About.com

Updated July 07, 2009

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Question: What is Bipolar I Disorder?
Answer: Bipolar I Disorder is also known as Bipolar 1 or Bipolar Type 1. According to the definition outlined in the Diagnostic and Statistical Manual of Mental Disorders (DSM-IV), Bipolar I Disorder, considered the most severe form of this mental illness, is "characterized by one or more Manic or Mixed Episodes, usually accompanied by Major Depressive Episodes."

In a major manic episode of Bipolar I Disorder the patient may become delusional and even suffer from hallucinations, which are symptoms of psychosis. If this occurs, the condition is called bipolar I with psychotic features. Only bipolar I disorder, by definition, can include such psychotic features. Bipolar I can seriously impair day-to-day functioning.

Other symptoms and characteristics of mania include:

  • Grandiosity
  • Decreased need for sleep
  • Pressured speech
  • Racing thoughts
  • Distractibility
  • Tendency to engage in behavior that could have serious consequences, such as spending recklessly or inappropriate sexual encounters
  • Excess energy

Symptoms and characteristics of major depression in Bipolar I Disorder include:

  • Decreased energy
  • Severe withdrawal from normal activities
  • Weight loss or gain
  • Despair
  • Irritability
  • Uncontrollable crying
  • Thoughts of or attempts at suicide
by Kimberly Read

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