Clinical depression lasts for at least three months. Depression is the result of the lack of certain chemical neurotransmitters in certain places in the brain. Sleep is usually disrupted. One has trouble going to sleep and then staying asleep. One usually feels most depressed in the morning.
Doctors prescribe anti-depressant drugs to help people over come depression.
B. Bipolar Disorder Bipolar disorder is also called manic-depressive disorder. Mania involves flight of ideas, extreme elevated mood, impulsive behavior, talkative, delusions of grandeur, hyperactive, not tired, and needs less sleep. A person will have mood swings from mania to depression. Usually lithium is used to stabilize a person with bipolar disorder. Delusion is a wrong interpretation of reality which logic can not change.