Symptoms of Parkinson’s disease, which afflicts around 1 million Americans, usually begin gradually and worsen over time.

Nervous system issues often show early signs before a full diagnosis. Doctors highlight five key red flags: resting tremor, action tremor, progressive memory loss with confusion, sudden one-sided ...

Essential tremor is a movement disorder marked by involuntary, rhythmic shaking in the hands but sometimes affecting the head, voice and other areas. Its exact cause is still unknown. Recent research ...