Could sleep trouble be the earliest sign of Parkinson’s?

REM Sleep Behaviour Disorder (RBD) can be an early sign of Parkinson's, often appearing years before motor symptoms. People may act out vivid dreams during REM sleep. Dr Vikram Sharma, Clinical Director & Senior Consultant Neurologist at CARE Hospitals, Hyderabad, stresses the need for early detection through sleep studies and regular neurological check-ups.