Symptoms may include hypertonia (increased muscle tone), clonus (rapid muscle contractions), exaggerated deep tendon reflexes, muscle spasms, scissoring (involuntary crossing of the legs), and fixed joints (contractures), constant muscle stiffness, spasms and involuntary contractions which can be painful, pain or discomfort, reduced ability to function, problems with care and hygiene, and abnormal posture. Bone and joint deformities can occur, and the degree of spasticity can range from mild muscle stiffness to severe, painful, and uncontrollable muscle spasms. In children, spasticity can lead to growth problems, painful and deformed joints, and disability.