ABSTRACT
A dermatoscopia é uma ferramenta prática e não invasiva que pode ser usada para distinguir a tinea nigra de outras lesões que parecem macroscopicamente semelhantes, incluindo o nevo melanocítico acral. Sob a dermatoscopia, a tinea nigra se apresenta com um padrão de deposição de pigmento marromacinzentado espiculado, enquanto o nevo melanocítico acral geralmente se apresenta como deposição de pigmento marrom em um padrão de sulco paralelo.
Dermoscopy is a practical, non-invasive tool that can be used to distinguish tinea nigra from other lesions that appear macroscopically similar, including acral nevus. Under dermoscopy, tinea nigra presents with a pattern of spiculated gray-brown pigment deposition, whereas acral nevus most often presents as brown pigment deposition in a parallel furrow pattern.
ABSTRACT
Trachyonychia or rough nails, may present as an idiopathic disorder of the nails or it can be associated with other dermatological conditions. The dystrophic nail findings seen in trachyonychia are characterized by brittle, thin nails, with excessive longitudinal ridging. The most common histopathologic features associated with trachyonychia are spongiosis and exocytosis of inflammatory cells into the nail epithelia; typical features of lichen planus or psoriasis can also be detected. Determining the cause of trachyonychia is challenging. Treatment is often unsatisfactory, although in general it should be aimed at the underlying cause, if found. In most cases, the nail abnormalities improve spontaneously.
ABSTRACT
Os autores relatam sua experiência no uso da dermatoscopia na psoríase ungueal e descrevem os achados dessa ferramenta diagnóstica.
The authors report on their experience with the use of dermoscopy in nail psoriasis and describe their findings with this diagnostic tool.
Subject(s)
Humans , Dermoscopy , Nail Diseases/pathology , Psoriasis/pathology , Nail Diseases/complications , Psoriasis/complicationsABSTRACT
Introducão: Rugas periorbitais sao pregas cutaneas muito comuns que se desenvolvem na area periocular. O tratamento das rugas varia de acordo com o grau de ravidade. Um tratamento relativamente novo, denominado terapia de inducao de colageno (TIC), parece apropriado para o tratamento destas rugas. Objetivo: Confirmar a utilidade da TIC no tratamento de rugas periorbitais. b>Pacientes e métodos: Foram incluidos 20 pacientes (12 mulheres e oito homens com idades entre 50 e 65 anos) com rugas periorbitais. Cada paciente foi tratado com um aparelho especifico em duas sessoes. A avaliacao foi feita a partir de fotografias tiradas em camera digital, para avaliar a profundidade das rugas, e de moldes de borracha de silicone, para imprimir o microrrelevo das rugas. Os dados fotograficos foram analisados com o teste estatistico de sinal (ƒ¿ < 0,05), e o conjunto de dados sobre a pele foi avaliado por meio da analise de imagens computadorizadas. Resultados: A analise das fotografias dos pacientes, apoiada pelo teste do sinal, e o grau de irregularidade do microrrelevo da superficie, apoiado pela transformacao rapida de Fourier e pelo processamento da imagem das rugas, mostraram que, depois de apenas duas sessoes, o grau de gravidade das rugas diminuiu consideravelmente na maioria dos pacientes. Conclusões: O presente estudo sugere que a TIC possa ser uma tecnica adequada para melhorar as rugas periorbitais.
Introduction: Periorbital wrinkles are very common and permanent cutaneous folds that develop on the periocular area. The treatment for wrinkles varies with the degree of severity. A relatively new treatment, called collagen induction therapy (CIT), seems to be appropriate for the treatment of periorbital wrinkles. Objective: To confi rm the usefulness of CIT in periorbital wrinkles treatment. Patients and methods: In total, 20 patients (12 females, 8 males; between 50-65 years of age) with periorbital wrinkles were included. Each patient was treated with a specifi c tool in two sessions. Using digital cameras, photos of all patients were taken to evaluate wrinkles' depth, and silicone rubber was used to make a microrelief impression of the wrinkles. The photographic data were analysed by using the sign test statistic (α < 0.05). Skin layer data were analysed by computerized image analysis. Results: Analysis of the patient photographs, supported by the sign test, and the degree of irregularity of the surface microrelief, supported by Fast Fourier Transform and by wrinkle's image processing, showed that, after only two sessions, the wrinkles' severity grade in most patients was greatly reduced. Conclusion: The present study suggests that CIT can be a suitable technique to improve periorbital wrinkles.