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May 01, 2008

Acute Generalized Bullous Eruption in a 2-Year-Old Boy—Diagnosis

Author Affiliations
 

CARRIE ANN R.CUSACKSENAIT W.DYSONMDJACQUELINE M.JUNKINS-HOPKINSMDVINCENTLIUMDKARLA S.ROSENMANMD

Arch Dermatol. 2008;144(5):673-678. doi:10.1001/archderm.144.5.673-h

The biopsy specimen showed a subepidermal bulla with a dense dermal infiltrate of mononuclear cells. Giemsa and Leder stains confirmed the presence of mast cells. The results of direct immunofluorescence were negative for IgA, IgM, and IgG.

A serum tryptase level was 13.3 ng/mL (reference range, 1.9-13.5 ng/mL). A complete blood cell count, serum IgE levels, electrolyte levels, liver function test results, and 24-hour urinary histamine levels were within normal limits. The patient was treated with oral diphenhydramine hydrochloride (Benadryl), topical emollients, and petrolatum-impregnated dressings for the erosions. His parents were given an adrenaline kit/epinephrine pen and a list of potential mast cell degranulators to avoid. One week later, there were no new bullae and the erosions were mostly healed.

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