DR RV ANAND CONSULTANT NEUROLOGIST SAI NEUROCLINIC MANDAVELI AND ABHIRAMAPURAM CHENNAI PARKINSON DISEASE is a brain disorder that affects movement.At first symptoms are mild.it can start as decreased arm swing while walking.tremors at resting state in hands, which can worsen with emotional out burst or in a new surroundings.gradually it progresses to slow ness in activities.patients may have postural imbalance more to follow