Parkinson's disease (PD) is a chronic brain condition that causes progressive damage to brain cells over many years

Parkinson's disease (PD) is a chronic brain condition that causes progressive damage to brain cells over many years. It's characterized by low dopamine levels, a neurotransmitter that helps the brain control movement and coordination. Symptoms can include:

• Unintended or uncontrollable movements, such as tremors, shaking, stiffness, and difficulty with balance and coordination

• Slow movement

• Painful muscle contractions

• Difficulty speaking

• Swallowing problems

• Chewing and eating problems

• Sleep problems, such as waking up frequently throughout the night, waking up early, or falling asleep during the day