Penfigoide buloso nodular tratado exitosamente con fototerapia UVB banda angosta / Pemphigoid nodularis successfully treated with narrow band UVB phototherapy

El Penfigoide nodular es una variante clínica poco frecuente de penfigoide buloso. Corresponde a una dermatosis ampollar subepidérmica, crónica, autoinmune, caracterizada por auto anticuerpos contra antígenos específicos de hemidesmosomas en la unión dermo-epidérmica. Su incidencia es desconocida. La etiopatogenia aún no es entendida del todo. Se presenta clínicamente como una superposición de características de pénfigo buloso y prurigo nodular. El diagnóstico se basa en hallazgos clínicos e inmunopatológicos. La histopatología con inmunofluorescencia directa es el gold standard para el diagnóstico. El manejo es difícil, tiene mala respuesta a corticoides potentes locales, siendo necesario el uso de corticoides sistémicos y diferentes inmunosupresores solos o combinados junto a antihistamínicos para el manejo de prurito intenso. Se presenta un caso de pénfigo nodular, donde destaca su buena respuesta a terapia combinada con metotrexato y luz UVB de banda angosta.

Pemphigoid Nodularis is a rare clinical variant of bullous pemphigoid. It is considered an autoimmune, chronic, subepidermal blistering dermatosis, characterized by antibodies against hemidesmosome-specific antigens at the dermo-epidermal junction. Its incidence is unknown and its etiopathogenetic not fully understood. Clinically, it presents with overlapping features of bullous pemphigoid and prurigo nodularis. The diagnosis is based on clinical and immunopathological findings, being the histopathological study with immunofluorescence the gold standard. The management is difficult; since it has a poor response to local potent corticosteroids, requiring the use of systemic corticosteroids and different immunosuppressants alone or combined with antihistamines for the intense pruritus. We present a case of nodularis pemphigoid, highlighting the good response to the combination of methotrexate and phototherapy with narrow band UVB.

Posible asociación autoinmune entre síndrome de Laugier-Hunziker y síndrome de Sjögren: reporte de un caso y revisión de la literatura / Laugier-Hunziker syndrome in a patient with Sjögren’s syndrome: report of one case

Laugier-Hunziker syndrome is a rare benign idiopathic condition characterized by acquired macular pigmentation of lips and buccal mucosa, often accompanied with melanonychia. The main concern with this condition is to rule out other differential diagnosis with systemic repercussions and similar hyperpigmentation patterns, such as Peutz-Jeghers syndrome, adrenal insufficiency and melanoma. We report a 58-year-old female with a 20-year history of Sjögren’s syndrome, presenting with melanonychia and hyperpigmentation in the buccal mucosa. She had no relevant medication history and is a non-smoker. The patient denied any other symptoms. The histopathology confirmed the diagnosis of Laugier-Hunziker syndrome.

Manifestaciones cutáneas de diabetes mellitus / Cross sectional search for skin lesions in 118 diabetic patients

Background: Thirty percent of patients with diabetes mellitus have some skin lesion that is directly related to the disease or caused by infections, complications or treatments used. Aim: To determine the frequency and type of skin lesions in diabetic patients. Material and methods: Cross sectional examination of 26 patients with type 1 diabetes, 75 patients with type 2 diabetes and 17 patients with gestational diabetes. A complete skin physical examination and a direct mycological examination and culture when Onychomycosis was suspected, were performed. Results: In 56 percent of patients, diabetes lasted more than 10 years and 52 percent had some complication of the disease. A mean of 1.4±0.1 skin lesions per patient was found among subjects with type 1 or 2 diabetes. No skin lesion was found in patients with gestational diabetes. The lesions found were Onychomycosis in 27 percent, diabetic dermatopathy in 17 percent, macroangiopathy in 15 percent, tine a corporis in 14 percent and neurosis in 14 percent. Conclusions: Onychomycosis is the most commonly found skin lesion in diabetic patient.