Parkinson’s Rigidity

Rigidity causes stiffness and inflexibility of the limbs, neck and body core. Normally, muscles stretch when they move, and then relax when they are at rest. In rigidity, the muscle tone of an affected part is always stiff and does not relax, often contributing to a decreased range of motion. A person may commonly experience tightness of the neck, shoulders and legs. Rigidity is uncomfortable and may be painful.