[The viewpoint of the dermatologist toward white atrophy].

Milian's white atrophy (1929), linked by English authors with livedoid vasculitis and segmentary hyaline vasculitis, is "the microvascular expression of diseases of variable aetiologies". It can be isolated, without vasculitis (idiopathic or secondary to an inflammatory livedo); the variety with vasculitis, most often observed, stems from loco-regional causes (above all from post-phlebitic venous hypertension) but also from general causes (collagenoses, infections, carcinamatoses). The need for an attempt at a better approach to white atrophy is clear.