We've all been there before. Running along the basketball court or swimming across the pool, when, all of a sudden, we experience a sharp pain in our foot or leg. Muscle cramps are common, affect ...

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.

Medically reviewed by Jennifer Steinhoff, MD Key Takeaways Muscle twitching is often caused by stress or a lack of sleep and ...

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 ...

Kyverna’s investigational CAR-T therapy, mivocabtagene autoleucel (miv-cel) showed clinically meaningful mobility improvements in most stiff-person syndrome patients, prompting the company to plan an ...

Though many people experience muscle twitching, it's often incorrectly identified as a muscle spasm. While both are involuntary contractions of a muscle, muscle spasms and muscle twitching aren't ...

Dystonia is a neurological disorder causing involuntary muscle contractions and abnormal postures. Botulinum toxin (e.g., Botox) is the gold-standard, first-line treatment for focal dystonias, which ...

Cold weather aggravates fatigue and spasticity for some with MS. Learn why and what you can do to stay more comfortable.