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Images 10.22.1A: Vesicular dermatitis, intraepidermal, spongiotic + 10.22.1B: Hyphae in the cornified layer = Dermatophytosis Were there no hyphae present in the stratum corneum, the differential diagnosis also would include allergic contact dermatitis, phototoxic dermatitis, nummular dermatitis, dyshidrotic dermatitis, and an “id” reaction. The finding of even a single hypha makes the diagnosis dermatophytosis. 10.22.2A: […]