Inflammation of muscle tissue, often from bacterial, viral, or parasitic infection but sometimes of unknown origin. Most types destroy muscle and surrounding tissue. Bacteria may directly infect muscle (usually after injury) or produce substances toxic to it. Some chronic diseases (e.g., tuberculosis, third-stage syphilis) can involve the muscles. Parasites (e.g., tapeworms, protozoans) in contaminated food enter the bloodstream from the intestines and lodge in muscle
Inflammation of a muscle Nocturnal myoclonus: A benign type of seizure activity that occurs, usually as a sudden jerk or thrash of the leg, in the period of transition to sleep It can cause arousal from deep sleep These occur in many people in the general population, as well as 16 percent of persons with FMS and may disrupt sleep It is usually treated with clonazepam (Klonopin® or Simenet®)