Definition of Dysthymia:

Dysthymia is a chronic type of depression in which a person's moods are regularly low. However, symptoms are not as severe as with major depression.

Causes, incidence, and risk factors:

The exact cause of dysthymia is unknown. It tends to run in families. Dysthymia occurs more often in women than in men and affects up to 5% of the general population.

Many people with dysthymia have a long-term medical problem or another mental health disorder, such as anxiety, alcohol abuse, or drug addiction. About half of people with dysthymia will also have an episode of major depression at some point in their lives.

Dysthymia in the elderly is often caused by:

• Difficulty caring for themselves
• Isolation
• Mental decline
• Medical illnesses