Résumé : Diabetic angiopathy is characterized by regional ischemia, which results from arteriosclerosis of the main artery. Microangiography shows a sclerosis of the arteriolar bed in skin and muscles, as well as arteriosclerosis of the vasa vasorum and vasa nervorum. Thus, certain neurological disturbances in patients with diabetes can be explained on the basis of the arteriosclerosis. Microangiography is the method of choice in assessing these syndromes, because it allows examination of a large number of samples and leads to better understanding of the arteriolosclerotic process.