12 Early Warning Signs Of Parkinson’s Disease

9. Rigid Muscles

Almost all patients with Parkinson’s will develop a stiffness in the muscles and limbs to some extent, known as rigidity. WebMD describes this as “the inability of the muscles to relax normally.”

Rigidity can cause a decrease in a person’s range of motion, and this can be accompanied by pain or discomfort in the affected parts of the body. One of the common ways to detect rigidity is if you’re having trouble swinging your arms while walking.