Huntington’s disease (HD) is a progressive brain disorder caused by a single defective gene on chromosome 4 — one of the 23 human chromosomes that carry a person’s entire genetic code.
- Weight loss
- Involuntary movements (chorea)
- Diminished coordination
- Difficulty walking, talking, and swallowing
- Difficulty with focus, planning, recall of information and making decisions
- Impaired insight
- Obsessive behavior