Huntington's sickness occurs when a defective gene reasons poisonous proteins to be acquired inside the mind. Huntington's sickness influences three-7 people in each 100,000 human beings of European ancestry. It seems to be much less common in human beings of Japanese, Chinese, and African descent, in line with Genetics Home Reference. The first symptoms and symptoms typically appear after a long time period of between 30 and 50 years.
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