
Parkinson's Disease: What Exactly Is It, and What Are Its 10 Early Symptoms?
Parkinson's disease is a progressive disorder that affects the nervous system and the parts of the body controlled by the nerves. Symptoms start slowly. The first symptom may be a barely noticeable tremor in just one hand. Tremors are common, but the disorder also may cause stiffness or slowing of movement. Tremor: Often starting in a hand or fingers, a tremor may appear as a back-and-forth rubbing of the thumb and forefinger, known as a pill-rolling tremor. Bradykinesia: Slowed movement is a hallmark symptom. This can manifest as a decreased ability to initiate voluntary movements or difficulty with activities that require fine motor control. Rigidity: Stiffness and inflexibility of...