Journal of the American Academy of Dermatology
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J. Am. Acad. Dermatol. · Oct 1995
ReviewCutaneous photosensitivity diseases induced by exogenous agents.
Cutaneous photosensitivity diseases may be idiopathic, produced by endogenous photosensitizers, or associated with exogenous photosensitizers. Those caused by exogenous agents include phototoxicity, photoallergy, and the exacerbation or induction of systemic disorders in which photosensitivity is a prominent clinical manifestation. Phototoxic disorders have a high incidence, whereas photoallergic reactions are much less frequent. ⋯ Drugs capable of causing phototoxic reactions include psoralens, porphyrins, coal tar, antibiotics, and nonsteroidal antiinflammatory agents. Drugs capable of causing photoallergic reactions include topical antimicrobial agents, fragrances, sunscreens, nonsteroidal antiinflammatory agents, plants, and psychiatric medications. Drug-induced systemic diseases in which photosensitivity is a prominent component include drug-induced lupus erythematosus, porphyria, and pellagra.
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Symmetric areas of erythema and induration developed on the cheeks of a 17-day-old black girl after ice packs were applied to her face for treatment of supraventricular tachycardia. To our knowledge, this is the first report of cold panniculitis caused by treatment of a cardiac arrhythmia with ice packs.
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Acute febrile neutrophilic dermatosis, first described in 1964 by Robert Douglas Sweet, has been termed Sweet's syndrome. Classic Sweet's syndrome occurs in middle-aged women after a nonspecific infection of the respiratory or gastrointestinal tract. Raised erythematous plaques with pseudoblistering and occasionally pustules occur on the face, neck, chest, and extremities, accompanied by fever and general malaise. ⋯ Sweet's syndrome responds rapidly to systemic therapy with corticosteroids but recurs in about 25% of the cases. Alternative treatment modalities (e.g., potassium iodide, colchicine, dapsone, clofazimine, cyclosporine) have also been used. This article presents data from 38 patients with Sweet's syndrome and reviews its epidemiology, clinical spectrum, histologic features, laboratory results, differential diagnosis, pathogenic mechanisms, associated diseases, and treatment.
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J. Am. Acad. Dermatol. · Apr 1994
Review Case ReportsAdjuvant radiotherapy after excision of cutaneous squamous cell carcinoma.
Most cutaneous squamous cell carcinomas (SCCs) of the trunk and extremities are small enough to be cured by simple surgical excision. Because the risk of metastasis of SCCs of the head and neck arising from mucosal surfaces is higher than the risk of metastasis of SCCs arising from cutaneous surfaces, it may be more appropriate to review case reports of the trunk and extremities separately from those of the head and neck when seeking prognostic indicators. ⋯ This report discusses prognostic indicators of cutaneous SCC and suggests adjuvant modalities for the treatment of high-risk disease after surgical excision. Radiotherapy is a rational choice as adjuvant therapy for the treatment of high-risk cutaneous SCC after excision.
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J. Am. Acad. Dermatol. · Feb 1993
Review Case ReportsExtensive cutaneous hyperpigmentation caused by minocycline.
A 65-year-old man had cutaneous hyperpigmentation that had occurred over the previous 2 1/2 years. The hyperpigmentation was extensive and involved the sclerae, nail beds, and total body; the palms and buttocks were spared. ⋯ A careful history showed that minocycline was the cause. Its use was discontinued, and after several years the patient's pigmentation is gradually returning to normal.