Insomnia is difficulty falling or staying asleep, the absence of restful sleep, or poor quality of sleep. Insomnia is a symptom and not a disease....

Myofascial pain syndrome facts Muscle pain, tenderness, and spasm are characteristics of myofascial pain syndrome. Myofascial pain syndrome typically affects muscle in asymmetric areas of the body. The precise ca...

Problem sleepiness occurs when sleepiness during the day interferes with work or social functioning. Symptoms of problem sleepiness may include difficulty concentrating, falling asleep while driving, or problems with emotional contr...