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 …

Jul 21, 2025 · What are statin side effects? Muscle pain and damage One of the most common complaints of people taking statins is muscle pain. You may feel this pain as a soreness, …

Sep 12, 2024 · Serotonin syndrome is a serious drug reaction. It is caused by medications that build up high levels of serotonin in the body. Serotonin is a chemical that the body produces …

Sep 12, 2025 · Dermatomyositis (dur-muh-toe-my-uh-SY-tis) is a condition in which swelling and irritation, called inflammation, attacks the body's tissues. Dermatomyositis causes muscle …

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 …

Mar 22, 2025 · Neuromuscular Disease Overview Neuromuscular diseases affect the function of muscles due to problems with the nerves and muscles in your body. The most common sign of …

Aug 10, 2022 · Symptoms The muscle weakness associated with polymyositis involves the muscles closest to the trunk, such as those in your hips, thighs, shoulders, upper arms and …

Feb 21, 2024 · Overview Cardiomyopathy (kahr-dee-o-my-OP-uh-thee) is a disease of the heart muscle. It causes the heart to have a harder time pumping blood to the rest of the body, which …

Feb 23, 2024 · Hypertrophic cardiomyopathy (HCM) is a disease in which the heart muscle becomes thickened, also called hypertrophied. The thickened heart muscle can make it harder …

Mar 1, 2025 · Polymyalgia rheumatica is an inflammatory condition. It causes joint and muscle pain and stiffness, mainly in the shoulders and hips. Symptoms of polymyalgia rheumatica (pol …