India, Jan. 10 -- It is common for people to attribute stiffness, slower movements, or reduced balance to "just getting older," to see these changes as part of life, and to adapt to them. Nevertheless, neurologists warn that if you experience stiffness throughout your body and your movements have become slow, this may not be due to motor ageing. Sometimes, it can be an indication of Parkinson's disease, a disorder of the nervous system that is progressive but responds well to early intervention and treatment.

The slow degeneration of dopamine-producing neurons in the brain leads to the disorder known as Parkinson's disease. The degeneration occurs in the substantia nigra, affecting the basal ganglia circuitry. Dopamine levels decrease, a...