Bipolar I disorder
Bipolar I disorder: The diagnosis of bipolar I disorder requires that the individual has at least one manic episode but does not require a history of major depression.
See also: Bipolar disorder.
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- Bipolar II disorder
Bipolar II disorder: Bipolar II disorder is diagnosed if the person has experienced at least one episode of major depression and at least one episode of hypomania (a milder form of mania). See also: Bipolar disorder.
- Bird flu
Avian influenza.
- Birt-Hogg-Dube syndrome
Birt-Hogg-Dube syndrome: An inherited condition in which benign tumors develop in hair follicles on the head, chest, back, and arms. These tumors are called fibrofolliculomas. Other characteristic skin abnormalities are trichodiscomas and acrochordons. A trichodiscoma is a tumor of the hair disc while an acrochordon is a skin tag. People with this syndrome are at […]
- Birth cohort
Birth cohort: A group of people born during a particular period or year.
- Birth control
Birth control is the use of any practices, methods, or devices to prevent pregnancy from occurring in a sexually active woman. Also referred to as family planning, pregnancy prevention, fertility control, or contraception; birth control methods are designed either to prevent fertilization of an egg or implantation of a fertilized egg in the uterus. Birth […]