Bach was a German composer of the Baroque period and virtuoso organist. His music is notable for its intellectual rigor and emotional expressiveness. Read Full Biography. 1  Overview 2  â. Biography 3  â. Compositions 4  â. Credits 5  â. Related â.
Diagnostic criteria for bipolar and related disorders are based on the specific type of disorder: 1  Bipolar I disorder. 2  Bipolar II disorder. 3  Cyclothymic disorder. 4  Other types.
Bipolar disorders are one of several medical conditions called depressive disorders. Depressive disorders affect the way a person's brain functions. Depressive disorders are widespread. In the United States alone, it's estimated that more than 17.4 million adults have a depressive disorder each year.