Livedo reticularis with ulcerations.

Idiopathic livedo reticularis may be associated with ulcerations of the lower extremities beginning primarily during the warmer or summer months, as well as the more usual occurrence of winter ulcerations. Summer ulceration apparently is a new and rare entity which has many clinical and histopathologic features similar to winter ulcerations. Hypertension, Raynaud's phenomena, acrocyanosis and thrombosis of digital arteries were noted only in patients with winter ulcerations, while edema of the legs and feet was a more prominent feature in patients with summer ulcerations. Medical treatment, including rest in bed, elastic supportive bandages and a trial of hexamethonium (bistrium bromide) injections, seemed to be the treatment of choice. Lumbar sympathectomy did not seem to be of great permanent value.