What is Parkinson disease? See surprising facts about the disease, treatment and prevention.
Parkinson's disease (PD) is a progressive neurodegenerative disorder that affects the nervous system and the way you move. Over time, PD damages and kills nerve cells in the brain. These nerve cells produce dopamine, a neurotransmitter that helps control and coordinate your movements. As dopamine levels decrease, people with PD experience a variety of motor and non-motor symptoms. Symptoms of Parkinson's Disease The most common motor symptoms of Parkinson's disease include: Tremor : A tremor is a rhythmic shaking that usually begins in the hands and fingers. It may also affect the head, legs, or jaw. Tremors are often most noticeable at rest and decrease when you move. Rigidity : Rigidity is a stiffness or muscle tension that makes it difficult to move your arms, legs, and trunk. Bradykinesia : Bradykinesia is slowness of movement. This can make it difficult to perform everyday tasks, such as getting dressed, getting out of bed, and walking. Postural instability: Postu...