Epidemiological study of periocular dermatitis in a specialised hospital department.

Contact dermatitis is frequent skin pathology and eyelids are one of the more frequent locations of this pathology. The objective of the present work was to study the population distribution of periocular dermatitis, determine the allergens which most frequently indicate positive in patch tests and in provocative use tests, and analyse the clinical relevance of the positive tests.Patients with periocular dermatitis (N=93) underwent a thorough physical examination and a patch test with standard series. According to clinical suspicions, 76 patients underwent a patch test with specific series. Finally a provocative use test was done for 36 patients with suspected products that the patients brought. The tests were classified according their relevance.The most frequently observed allergen in the patch tests (with standard and specific series) was nickel followed by mercury, and anti-glaucoma drops in the provocative use tests with patients products.Patients' sex, age, occupation, clinical status, presence of associated periocular symptoms, and presence of atopic or seborrheic dermatitis and/or rosacea did not relate with relevance.We conclude that a clinical diagnosis may not always be made with patch tests with standard and specific series due to lack of relevance. It is important to do provocative use tests with the products suspected as allergens in those cases where patch tests with standard and specific series indicated positive for more than one allergen.

Reticulohistiocitosis congénita autoinvolutiva / Congenital self-healing reticulohistiocytosis

Presentamos una recién nacida con erosiones en flexuras, pápulas palmo-plantares y placas rosadas en la espalda sin afectación sistémica. La histologíamostraba un infiltrado histiocitario en dermis superior con epidermotropismo. La inmunohistoquímica resultó positiva para S100 y CD1a por loque se trataba de células de Langerhans. El estudio de extensión fue negativo. Las lesiones involucionaron espontáneamente en el plazo de 2 semanas,diagnosticándose de Reticulohistiocitosis congénita autoinvolutiva

A female newborn who presented erosions on folds, papules on palms and soles and red-brownish plaques on the back without involvement of internalorgans is reported. Light microscopy showed an histiocytic infiltrate in the papillary dermis with epidermotrophism. Inmunomarking with S100and CD1a was positive; therefore the histiocytes were Langerhans cells. The systemic evaluation excluded extracutaneous involvement. The cutaneouslesions resolved spontanously in two weeks so the case was diagnosed as Congenital self-healing reticulohistiocytosis