de Quervain's tenosynovitis and carpometacarpal (CMC) arthritis are also very common upper extremity problems. In de Quervain's tendonitis, inflammation in the first dorsal compartment of the wrist causes tenderness and chronic pain in the radial styloid region when forming a fist or using the thumb. CMC arthritis, most common in women 40-70, causes pain at the base of the thumb. Descriptions of the severity of this condition can range from stiffness to disability, and are associated with complaints of discomfort with pinching and gripping.