Residents of the District of Columbia lack full democratic representation in the U. S. Senate or the U.S. House of Representatives. Representation in Congress is limited to a non-voting delegate to the House of Representatives and a shadow Senator.
Huntington's disease. Definition. Huntington's disease is an inherited disease that causes the progressive breakdown (degeneration) of nerve cells in the brain. Huntington's disease has a broad impact on a person's functional abilities and usually results in movement, thinking (cognitive) and psychiatric disorders.
Huntington's disease causes certain nerve cells in the brain to stop working properly. It leads to mental deterioration and loss of control over major muscle movements. Typically, the symptoms of the illness begin between ages 35 and 50, although they can start as early as childhood or later in life.