Huntington's disease causes progressive disability. The disorder is usually fatal within 15 to 20 years. The cause of death is often infection, although suicide is also common. It is important to realize that not all patients with Huntington's Disease progress at the same pace and are equally affected. The number of repeats may determine severity. People with few repeats may have mild abnormal movements later in life and slow disease progression, whereas those with many repeats may be severely affected at a young age.
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