Cerebral circulatory insufficiency & its functional manifestations (vertigo, headache, loss of memory, decrease in intellectual capacity & disturbances in motor functions). Arteriopathy of the lower limbs & their trophic complications. Distal vasomotor disorders & microcirculatory problems (Raynaud's syndrome, acroparesthesia, acroerythrocyanosis, capillary fragility). Ophthalmologic & ENT circulatory neurosensory disorders.