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.

Anyone who has had tight muscles or a muscle spasm knows how uncomfortable and limiting these experiences can be. But when you have spasticity, which causes tight muscles and uncontrollable ...

In cerebral palsy (CP), the spastic motor type is most common, associated with a velocity-dependent increase in muscle stiffness that precedes the development of fixed muscle contracture. In ...

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 ...

‌Hemifacial spasm is a disorder of the nerves and muscles that causes nonpainful involuntary twitching on one side of the face. Many people refer to hemifacial spasms as lip muscle spasms. Hemifacial ...

Stiff person syndrome (also known as SPS, Moersch-Woltman syndrome, and stiff man syndrome) is a very rare condition that can cause your muscles to become rigid or spasm. This is a progressive ...

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 ...

Dyskinesia refers to uncontrolled, involuntary muscle movements ranging from shakes, tics and tremors to full-body movements. It can happen with various neurological conditions. Another type of ...

Symptoms of spasticity — including chronic muscle stiffness, pain, and jerkiness of voluntary movements — can interfere with your daily activities. Left untreated, these symptoms may significantly ...

Panel A shows the microscopic myoarchitecture of the circular and longitudinal muscle layers of the lower esophageal sphincter and stomach. The circular muscle fibers of the esophagus cross each other ...