Add Yahoo as a preferred source to see more of our stories on Google. Many of us have felt a muscle in some part of our body suddenly and involuntarily tighten, causing a twitch or even severe cramp.

Spastic cerebral palsy is a disorder that involves muscle stiffness. Symptoms and signs may include difficulty walking, trouble manipulating objects, and vision, hearing, or speech challenges.

Muscle relaxers help reduce muscle stiffness and pain from conditions like cerebral palsy and lower back pain. There are two main types of muscle relaxers: antispastics and antispasmodics. Muscle ...

An opportunity to reduce global burden of stroke-related disability SAN ANTONIO, Feb. 4, 2026 /PRNewswire/ -- For many stroke survivors, recovery is derailed by painful muscle stiffness and ...

Laryngeal dystonia causes spasms in the voice box (larynx). It can affect voice quality, leading to hoarseness or interruptions in sound. It may become difficult for a person to speak. Oromandibular ...

Stiff person syndrome (SPS) causes you to have muscle stiffness and spasms, often triggered by sudden noises or touch. You can use medications like muscle relaxants and anticonvulsants to relieve ...

SAN ANTONIO, Feb. 4, 2026 – For many stroke survivors, recovery is derailed by painful muscle stiffness and involuntary spasms that limit movement, independence and quality of life. Often viewed as an ...