Organic bipolar disorder refers to a condition where a person experiences intense mood swings ranging from manic highs to depressive lows, caused by a physical and biological source within the brain. However, there are several other synonyms that can be used to describe this condition. One such synonym is "neurobiological mood disorder," which emphasizes the biological component of the disorder. Another synonym is "brain-based mood disorder," highlighting the source of the disorder within the brain. "Endogenous mood disorder" is also a synonym used to describe bipolar disorder that results from factors originating within the body rather than external influences. Regardless of the term used, it is important to understand and seek appropriate treatment for this condition.