Huntington Disease is a brain disorder that causes uncontrolled movements, emotional problems, and loss of thinking ability. Huntington disease usually appears in a person at a age of 30 or 40. Early symptoms can include irritability, depression, small involuntary movements, poor coordination, and trouble learning new information or making decisions. The individuals suffering from this disorder may have trouble in walking, speaking, and swallowing. People with this disorder also experience decline in thinking and reasoning abilities. Individuals suffering with this huntington disease usually live about 15 to 20 years after signs and symptoms begin.