Thromboangiitis obliterans, also known as Buerger's disease, is a non-atherosclerotic inflammatory disease that causes segmental occlusion of small and medium arteries and veins in the extremities. It most commonly affects the hands, feet, legs and arms of middle-aged men. Symptoms include claudication, pain at rest, ischemic ulcers and gangrene. Diagnosis requires a history of tobacco use, distal extremity ischemia, exclusion of other diseases, and consistent angiographic findings. The disease is most prevalent in Asia and among Ashkenazi Jews. Cessation of tobacco use is the primary treatment.