Calcipotriol treatment of confluent and reticulated papillomatosis (Gougerot–Carteaud syndrome)

Gougerot–Carteaud syndrome or confluent and reticulated papillomatosis (CRP), was first described by Gougerot and Carteaud as dermatosis. 1,2 It is generally considered a rare condition. The eruption consists confluent, flat, brown papules localized primarily to the intermammary and interscapular regions with subsequent spread to the breast and abdomen; at the periphery, the papules spread out forming a pigmented reticulated pattern. At present, the aetiology of CRP remains unknown. The two prominent theories are an abnormal host response to fungi 3 and a keratinization defect. 4,5 Other hypothesis include photosensitivity, 6 genetic factor, 7 amylodosis cutis 8 and endocrinopathy. 9