Abstract
We report the case of a 61-year-old male with diabetes mellitus（DM）who presented with both diabetic digital sclerosis and diabetic scleredema. He had been suffering from type two DM for 26 years. In 2003, he visited our department complaining of a stiff neck. Histological findings demonstrated abundant collagen bundles separated by widened clear spaces throughout the thickened dermis. A diagnosis of diabetic scleredema was made. Furthermore, we found digital sclerosis. A biopsied specimen from the finger revealed abundant collagen bundles in the mid- to lower dermis without thickened collagen bundles. An association of diabetic scleredema with diabetic digital sclerosis has rarely been reported; however, we insist that digital sclerosis is one of important symptoms of DM.
