Shoulder stiffness is, in fact, often associated with Parkinson's disease, a brain disorder caused by a lack of dopamine in the brain. Dopamine is a chemical that helps you to have smooth, coordinated muscle movements.
Source: Very Well Health
Shoulder stiffness is, in fact, often associated with Parkinson's disease, a brain disorder caused by a lack of dopamine in the brain. Dopamine is a chemical that helps you to have smooth, coordinated muscle movements.
Source: Very Well Health
