Upper extremity ischemia caused by small artery disease.

One hundred patients with ischemic finger ulceration had detailed prospective evaluation to determine the incidence of associated diseases, response to treatment, and natural history of the condition. A potentially serious associated disease was detected in each patient including autoimmune disease in 54%, Buerger's disease in 9%, arteriosclerosis obliterans in 9%, hypersensitivity angiitis in 22%, and miscellaneous diseases in 6%. Conservative treatment with soap and water scrubs, antibiotics, and local resection/debridement resulted in long-term healing without recurrence in 88% of patients. Most recurrences occurred in patients with autoimmune disease, usually scleroderma or CRST.