Mar 7, 2023 · Overview A muscle cramp is a sudden, unexpected tightening of one or more muscles. Sometimes called a charley horse, a muscle cramp can be very painful. Exercising or working hard, …

Jun 27, 2023 · Helps build muscle. Causes features such as facial hair and a deeper voice. The anabolic steroids used by athletes are often forms of testosterone made in a lab. Some people use anabolic …

Aug 22, 2025 · This causes muscle weakness. Myasthenia gravis also may happen if antibodies block proteins such as muscle-specific receptor tyrosine kinase, also called MuSK, or lipoprotein-related …

Strength, muscle size and performance. Creatine supplement use might help an athlete do more work during repeated short bursts of high-intensity exercise, such as lifting weights or sprinting. Creatine …

Jul 21, 2025 · Very rarely, statins can cause life-threatening muscle damage called rhabdomyolysis (rab-doe-my-OL-ih-sis). Rhabdomyolysis can cause extreme muscle pain, liver damage, kidney failure, …

Motor nerves that control muscle movement. Autonomic nerves that control functions such as blood pressure, sweating, heart rate, digestion and bladder function. Symptoms of peripheral neuropathy …

Jan 30, 2024 · Ataxia describes poor muscle control that causes clumsy movements. It can affect walking and balance, hand coordination, speech and swallowing, and eye movements. Ataxia usually …

Jan 5, 2024 · Muscle relaxers. Clonazepam (Klonopin) and other medicines called benzodiazepines help treat the anxiety and poor sleep that sometimes come with myofascial pain syndrome. These …

Oct 27, 2022 · Mild sprains can be successfully treated at home. Severe sprains sometimes require surgery to repair torn ligaments. The difference between a sprain and a strain is that a sprain injures …

May 30, 2024 · There are many types of movement disorders that cause different symptoms. For example, dystonia causes muscle contractions that lead to twisting of the body. Another movement …