My husband of 72 has had parkinsons for about 12 years. He now suddenl...

Parkinson's normally gets gradually worse but sometimes change appears abrupt. Some drugs e.g. for psychosis vomiting nausea or dizziness can block the effect of Parkinson's drugs. Other illness such as infection or an underactive thyroid can worsen Parkinson's. At the simplest level he may need more Parkinson's medication.

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