Parkinson’s disease is a disorder of the central nervous system that gets worse over time with no cure. Because it targets the nervous system, it impairs movement. ‌Rigidity is one of the leading ...

Work out enough and you’ll soon encounter muscle tightness, but what causes it and can it be treated or avoided? When you purchase through links on our site, we may earn an affiliate commission.

Tight and rigid muscles are often the result of injury. Sometimes, muscle tightness and rigidity can occur with other symptoms, such as muscle pain and spasms, or reduced mobility. Mild muscle ...

You’ve tried everything. Stretching routines, massage therapy, foam rolling, hot baths, and still, that nagging tightness in your muscles persists. Before you book another bodywork session or invest ...

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 ...

Joint pain has quietly become one of the most common health complaints of modern life. Knee pain, shoulder pain, tennis elbow ...

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 ...

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 ...