Muscle rigidity can happen when muscles are overused or not exercised enough. Stretching can usually relieve muscle stiffness ...

Parkinson’s disease is a disorder of the central nervous system that gets worse over time with no cure. Because it targets the nervous system, it impairs movement. ‌Rigidity is one of the leading ...

Tight and rigid muscles are often the result of injury. Sometimes, muscle tightness and rigidity can occur with other symptoms, such as muscle pain and spasms, or reduced mobility. Mild muscle ...

Medically reviewed by Diana Apetauerova, MDMedically reviewed by Diana Apetauerova, MD Rigidity—when your muscles are stiff and resist moving—is one of the primary symptoms of Parkinson's disease. It ...