2. Huntington’s Disease
Huntington’s 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. Treatment aims to limit the course of the disease. HD typically shows itself when the individual is between 30 and 40-years old—however, rare forms begin in childhood. Symptoms of HD include uncontrolled movement (chorea), difficulty swallowing, behavioral changes, difficulty balancing and walking, memory, speech, and cognitive loss.