he histology of stretch marks is that of a scar, and the development of SD has been likened to that of wound healing or scar formation.16 In the early stages, inflammatory changes may be conspicuous, but later the epidermis is thin and flattened. Recent SD show a deep and superficial perivascular lymphocytic infiltrate around the venules.17 Collagen bands on the upper third of the reticular dermis are stretched and aligned parallel to the surface of the skin. In the latter stages, there is thinning of the epidermis due to flattening of the rete ridges and loss of collagen and elastin.18 SD are two and a half times as frequent in women and affect up to 90% of pregnant women. The commonest sites are the outer aspects of the thighs and the lumbosacral region in boys and the thighs, upper arms, buttocks, and breasts in girls.19 Recently it was demonstrated that SD are associated with loss of fibrillin, a fact that explains the counter replacement of fibrillin upon retinoic acid therapy.20