Parkinson s disease (PD) is a degenerative neurological condition that impairs motor function. It happens when the brain s dopamine-producing cells are lost. One chemical messenger that aids in regulating movement and coordination is dopamine. Tremors, stiffness, and slowness of movement are some of the most obvious signs of Parkinson s disease (PD). It s essential to remember that PD affects each person differently, and symptoms can vary widely from person to person.