Fibrositis is a term that is used to refer to chronic pain in the soft tissues of the body, such as the muscles, tendons, and ligaments. However, this term is not widely used in modern medical practice. Instead, doctors and medical professionals may use a variety of other terms to describe the same condition. Some of the most common synonyms for fibrositis include fibromyalgia, myofascial pain syndrome, chronic fatigue syndrome, and tension myalgia. Each of these terms is used to describe pain or discomfort in the soft tissues of the body that is often difficult to diagnose and treat. If you are experiencing chronic pain, it is important to speak with a doctor to determine the underlying cause and develop an appropriate treatment plan.