Tendosynovitis is a medical condition characterized by inflammation of the tendons and surrounding sheaths. Some common synonyms for tendosynovitis include tenosynovitis, tendonitis, and tendinitis. Tendonitis refers to inflammation of the tendons, while tenosynovitis involves inflammation of the tendon sheath. Other terms used to describe tendosynovitis include tendinosis, paratenonitis, and peritendinitis. Regardless of what term is used, tendosynovitis is a painful condition that can affect any part of the body where tendons are present. Treatment typically involves rest, ice, compression, and anti-inflammatory medications to reduce pain and swelling. In severe cases, surgery may be necessary to repair damaged tendons or remove inflamed tissue.