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.
Huntingtonâs Disease. Huntingtonâs Disease (HD) causes the degeneration of the nerve cells in the brain and central nervous system. This hereditary condition is autosomal dominant disorder, meaning that children have a 50-percent chance of developing it and passing it along to their own children if one of their own parents has it.