Abstract Background The knowledge of general practitioners about photoprotection is unknown. Objectives To develop and validate an instrument to evaluate the knowledge of general practitioners and pediatricians about photoprotection, gauging the knowledge of these professionals. Methods The study followed the steps: (1) Literature identification and item elaboration related to the theme; (2) Content validation; (3) Apparent validation; (4) Construct validation: internal consistency analysis and discriminatory analysis; (5) Reliability analysis. In Step 4, the instrument was applied to 217 general practitioners and pediatricians who worked in the host city of the study; the scores were compared with dermatologists scores. Results The final instrument had 41 items and showed satisfactory internal consistency (Cronbach's alpha = 0.780), satisfactory reproducibility and good test-retest reliability (good-to-excellent kappa statistic in more than 60% of items). The discriminatory analysis registered a mean score of 54.1 points for dermatologists and 31.1 points for generalists and pediatricians, from a total of 82 possible points, representing a statistically significant difference (p < 0.001). Generalists and pediatricians demonstrated an understanding of the relationship between excessive sun exposure and skin cancer, but they revealed lack of technical information necessary for their professional practice. Study limitations The instrument evaluates only knowledge, without evaluating the conduct of the participants. Conclusion The results show that the instrument has good internal consistency and good reproducibility. It could be useful in the identification of general practitioners and pediatricians knowledge gaps on the subject, for the subsequent development of training and educational strategies.

Impetigo herpetiforme é uma dermatose gestacional rara que se inicia tipicamente durante o último trimestre e evolui com rápida resolução no período pós-parto. Clinica e histologicamente é consistente com psoríase pustulosa. Essa similaridade tem levado alguns autores a nomearem a doença como "psoríase pustulosa da gestação". Relatamos o caso de uma paciente que apresentou impetigo herpetiforme em duas gestações subsequentes.

Impetigo herpetiformis is a rare dermatosis of pregnancy with typical onset during the last trimester of pregnancy and rapid resolution in the postpartum period. Clinically and histologically, it is consistent with pustular psoriasis. This similarity has led some authors to name the disease "the pustular psoriasis of pregnancy". We report the case of a patient who developed impetigo herpetiformis in two sucessive pregnancies.

Pioderma gangrenoso é dermatose rara de etiologia não completamente compreendida e apresentação clínica variável. A doença apresenta muitos desafios à equipe médica, desde a freqüente dificuldade diagnóstica até a inexistência de evidências científicas com bom nível para condução de casos extensos e refratários. Apresentamos o caso de um paciente masculino, 50 anos, com úlcera extensa e profunda em perna esquerda, que exemplifica bem a dificuldade terapêutica e que, felizmente, evoluiu com excelente resultado após associação de oxigenoterapia hiperbárica e enxertia de pele ao tratamento imunossupressor inicialmente proposto.

Pyoderma gangrenosum is a rare dermatosis of unknown etiology and variable clinical presentation. The disease is challenging for the medical staff, from the frequent diagnostic difficulties to the lack of scientific evidence with a good level to support the management of extensive and refractory cases. Our patient is a 50 year-old man with an extensive and deep ulcer on the left leg, which exemplifies the therapeutic difficulties inherent to the disease and who, fortunately, has progressed with excellent result after association of hyperbaric oxygen therapy and skin grafting to the immunosuppression therapy initially proposed.

Síndrome de Noonan é uma das mais frequentes síndromes genéticas e importante diagnóstico diferencial em crianças com fácies sindrômica similar ao fenótipo da síndrome de Turner. É caracterizada por dismorfismo facial, defeitos cardíacos congênitos, baixa estatura e uma ampla variação fenotípica. Esse artigo apresenta um caso de uma paciente de 10 anos de idade com síndrome de Noonan que apresentava fácies tiípica além de defeitos cardíacos (dilatação de artéria pulmonar e insufiência mitral), má oclusão dentária, micrognatismo, baixa estatura e dificuldade de aprendizado.

Noonan Syndrome is one of the most common genetic syndromes and also an important differential diagnosis in children presenting with syndromic facies similar to Turner's syndrome phenotype. This syndrome is characterized by facial dysmorphism, congenital heart defects, short stature and also a wide phenotypic variation. This article discusses the case of a 10 year-old patient with Noonan syndrome that presented typical facies, cardiac defects (pulmonary dilatation and mitral regurgitation), dental malocclusion, micrognatism, short stature and a certain degree of learning disability.