Muscle pain refers to any discomfort or soreness experienced in one or more muscles of the body. This type of pain can be caused by a variety of factors, including overexertion, strain, injury, or tension. Muscle pain is often characterized by a tight, burning, or throbbing sensation and can range from mild to severe in intensity. It may also be accompanied by swelling, stiffness, and limited mobility of the affected muscles. Common causes of muscle pain include exercise or physical exertion, poor posture, stress, and certain medical conditions such as fibromyalgia or lupus. Treatment for muscle pain typically involves rest, ice or heat application, over-the-counter pain relievers, stretching exercises, and in some cases, prescription medication or physical therapy.