About

Mood: anxiety, apathy, general discontent, guilt, hopelessness. Sleep: early awakening, excess sleepiness, insomnia, or restless sleep. Behavioral: agitation, excessive crying, irritability, or social isolation.

when moods swing from depression or sadness to a highly excited, irritated or energized state (called mania) and back, it may be a sign of bipolar disorder, also known as manic depression. Major (clinical) depression, dysthymia and bipolar disorder are types of mood disorders.