[What's new in pediatric dermatology?].

The literature review for 2009 covers the principal themes of the speciality and brings new findings in the fields of pathophysiology, clinical features, therapeutical approaches. With regards to atopic dermatitis, we noticed new studies on potential inducing factors (breastfeeding, probiotics, food, vitamins, prematurity, Staphylococcus aureus and constipation). There are also new data on therapy using tacrolimus. With regards to vascular anomalies and especially haemangiomas, the literature comprises new data on evolution and efficacy of propranolol. With regards to congenital nevi, there are studies related to treatment and complications. With regards to warts, the literature brings news about virus transmission and therapy. With regards to genodermatosis (neurofibromatosis type I, cutis laxa, pseudoxanthoma elasticum, epidermolysis bullosa, ichtyoses and pilar diseases), we found novel facts in the fields of molecular analysis, clinical aspects, pathophysiology and quality of life. The literature in 2009 also contains studies on Lyell syndrome, Kawasaki disease, vitiligo, psoriasis, pityriasis rubra pilaris, urticaria and alopecia areata.