A systematic approach to systemic contact dermatitis and symmetric drug-related intertriginous and flexural exanthema (SDRIFE): a closer look at these conditions and an approach to intertriginous eruptions.

Systemic contact dermatitis is a condition that occurs when an individual sensitized to a contact allergen is exposed to that same allergen or a cross-reacting molecule through a systemic route. Systemic exposure to allergens can include transcutaneous, transmucosal, oral, intravenous, intramuscular, and inhalational routes. Baboon syndrome is perhaps the most recognizable form of systemic contact dermatitis, presenting with diffuse, well demarcated erythema of the buttocks, upper inner thighs, and axillae. Other forms of systemic contact dermatitis include dermatitis at sites of previous exposure to the allergen such as at a previous site of dermatitis or at sites of previous positive patch tests, dyshidrotic hand eczema, flexural dermatitis, exanthematous rash, erythroderma, and vasculitis-like lesions. The most common causes of systemic contact dermatitis consist of three groups of allergens: (i) metals including mercury, nickel, and gold; (ii) medications including aminoglycoside antibacterials, corticosteroids, and aminophylline; and (iii) plants and herbal products including the Compositae and Anacardiaceae plant families and Balsam of Peru. Baboon syndrome caused by systemic medications without a known history of previous cutaneous sensitization in the patient has been termed drug-related baboon syndrome (DRBS) or symmetric drug-related intertriginous and flexural exanthema (SDRIFE). Criteria for SDRIFE include exposure to systemic drug at first or repeated dose, erythema of the gluteal/perianal area and/or V-shaped erythema of the inguinal area, involvement of at least one other intertriginous localization, symmetry of affected areas, and absence of systemic toxicity. The most common causes are aminopenicillins, ß-lactam antibacterials, and certain chemotherapeutic agents, though the list of etiologic agents continues to grow. Baboon syndrome and SDRIFE should be strongly considered in a patient presenting with a symmetric intertriginous eruption involving multiple body folds. With the knowledge of the most frequent causes of these conditions, a detailed history and review of exposures will guide the clinician in the search for the most likely etiologic agent.

Hodgkin lymphoma presenting as a vulvar mass in a patient with crohn disease: a case report and literature review.

OBJECTIVE: A case of Hodgkin lymphoma of the vulva and perineum is presented along with a review of the literature. MATERIALS AND METHODS: Medical chart and clinical images were reviewed. RESULTS: A 45-year-old female patient with a longstanding history of Crohn disease presented with a large vulvar and perineal mass. Physical examination revealed a mass measuring approximately 20 x 20 cm involving primarily the labia majora, the labia minora, and the clitoris as well as the perineum. Incisional biopsy of the vulvar mass revealed histologic diagnosis and immunohistochemistry typical of classic Hodgkin lymphoma. Imaging revealed involvement of multiple lymph nodes as well as the liver. The patient was designated as having stage IV disseminated Hodgkin lymphoma, and chemotherapy with doxorubicin, bleomycin, vinblastine, and dacarbazine was instituted. A significant reduction of the size of the vulvar mass was observed following 8 cycles of chemotherapy. CONCLUSIONS.: Lymphoma of the vulva is rare with the majority being of the non-Hodgkin lymphoma type. The most common subtypes of vulvar lymphoma reported are diffuse large B-cell lymphoma and follicular lymphoma. Perianal Hodgkin lymphoma is also very rare but has been reported in association with human immunodeficiency virus infection, Epstein-Barr virus infection, and Crohn disease. This is only the second reported case of Hodgkin lymphoma of the vulva and the second case of Hodgkin lymphoma involving the perianal area in a female patient. There is currently no evidence that Crohn disease is associated with an increased risk of Hodgkin lymphoma.