DeQuervain's tendonitis is a common condition affecting the tendons of the first dorsal compartment on the radial side of the wrist. It is classically described in new mothers but can affect adult men and women of any age. Pain and tenderness can be severe and is usually located over the radial styloid and aggravated with wrist motion (especially radial and ulnar deviation.) Finkelstein's maneuver (placing the thumb in the palm, wrapping the fingers around it, and passively ulnardeviating the wrist) is the classic provocative test to reproduce symptoms. Rest, ice, and NSAID's can often provide relief. Steroid injections can sometimes be curative. Surgery, when indicated, consists of opening the sheath, and can usually be done under local anesthesia. The hand can generally be used for light tasks immediately.