Man with Bipolar Disorder
Bipolar disorder, also known as manic depression, is characterized by
shifts in a person's mood, energy, and capacity to function that range
from euphoria to deep depression. The duration and intensity of these
mood states vary widely. Fluctuating from one mood state to the next is
called cycling. Bipolar disorder tends to run in families, and those
families tend to have an increased incidence of depression. There is
also a higher rate of suicide. Special consideration must be given to
treatment, because certain medications used to treat depression may
cause mood swings in these patients.

Urinary System of Pregnant Woman and Human Fetus