Diagnostic Dilemmas in Dermatology

Blair, G. A. S.

doi:10.1097/jdn.0000000000000137

Journal of the Dermatology Nurses' Association

2015

DOI: 10.1097/jdn.0000000000000137

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Diagnostic Dilemmas in Dermatology

G. A. S. Blair¹

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2016

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Cefalexin

2016

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Cefalexin Allergic reaction: case reportA 73-year-old man developed allergic reaction to cefalexin. The man was diagnosed with a contact dermatitis and early cellulitis, after he presented with mild swelling and erythema of the bearded areas of the face and neck. He was prescribed with oral cefalexin at a dosage of 500 mg/6 hours for 7 days, with a advice to stop shaving until the tissue was resolved. When the antibiotic course was completed, the dermatitis had a raised red edge; suggestive of a fungal infection. He was prescribed with fluconazole after modification of the diagnosis to tinea barae. For bacterial cellulitis, he was treated with oral cefalexin at a dosage of 500mg twice daily, for 7 days. After 5 days, he begun to develop a pruritic dermatitis of the extensor surfaces of the right fore arm and left fore arm; scaled, annular, excoriated, and erythematous dermatitis that was poorly marinated and eczematous in appearance. His shave biopsy revealed an acute spongiotic dermatitis with a superficial perivascular infiltrate with red blood cell extravasation and rare eosinophils.The man was treated with a topical corticosteroid ointment for a dermatophytid reaction that led to quick improvement in his peripheral dermatitis quickly and his facial dermatitis responded to the oral antifungal medication treatment.

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Cefalexin

2016

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Diagnostic Dilemmas in Dermatology

Cited by 1 publication

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