Both Fingertip and Extensor Scleroderma Digital Ulcers Show Improved Blood Flow After Vessel Dilation
Blood vessel-dilating treatments increase blood flow equally well in digital ulcers on fingertips and in extensor surface ulcers, which occur on the opposite side of joints. This shows that a lack of blood supply — and therefore oxygen to the tissue — cause both types of ulcers in scleroderma patients.