Parkinson disease

About Parkinson disease

Parkinson's disease is no longer an unusual disease

This slowly progressing neurodegenerative disorder generally arises from 40 years old onward, most typically after 50 years old. The cause is unknown, although decreasing levels of the neurotransmitter dopamine are believed to be involved. The incidence of Parkinson's disease in Japan is believed to be approximately one in every 1,000 people, with estimates of over 100,000 patients nationwide. This number is expected to increase with the increasingly rapid aging of society. Although the onset of Parkinson's disease most frequently occurs in the 50s and 60s, occurrence in elderly people aged in their 70s and over is not rare. Parkinson's disease also sometimes occurs in people younger than 40. The disease is not generally regarded as inherited, but genetic abnormalities are known to be present in some people who develop the disorder at a young age.

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