People with manic depression or bipolar affective disorder have periods of depression and periods of feeling unusually "high" or elated. About 1% of the population is affected. The "highs" can get out of hand, and the manic person may behave in a reckless manner, sometimes to the point of financial ruin or getting in trouble with the law.

It tends to run in families. Drug abuse and stressful or traumatic events may contribute to or trigger episodes.

Symptoms of mania include:

• Feelings of euphoria, extreme optimism, exaggerated self-esteem
• Rapid speech, racing thoughts
• Decreased need for sleep
• Extreme irritability
• Impulsive and potentially reckless behaviour
• Treatment includes medication and therapy.

Excerpts from CMHA National web site – Bipolar Disorder