Shy–Drager syndrome

A rare degenerative disorder of unknown cause that progressively damages the autonomic nervous system. It begins gradually at age 60–70 and is more common in men. Symptoms include dizziness and fainting due to postural hypotension, urinary incontinence, impotence, reduced ability to sweat, and parkinsonism. The condition eventually leads to disability, and sometimes premature death. There is no cure or means of slowing degeneration, but many symptoms are relieved by drugs.