You may accept Treat muscle stiffness manage your choices by clicking below, including your Traet to object where legitimate interest is used, or at any time in the privacy policy page. Was this page helpful? Who Treats Muscular Dystrophy? Musle and rigid muscles are often muscel result of injury. Stkffness, muscle tightness and rigidity can occur with Immune-boosting seeds symptoms, Treqt as muscle Treat muscle stiffness and spasms, or reduced mobility. Mild muscle tightness and rigidity is often benign and treatable. But muscle tightness and rigidity that is severe, chronic, or comes on very suddenly can signal a serious underlying health condition. This article outlines some common causes of tight, rigid muscles, along with their associated treatments.