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To the Editor.—
In reference to the article by Dr Hertz et al on herpes gestationis (Archives 112:1543-1548, 1976), a broad differential diagnosis was considered. In our experience, the clinical and histological pattern described would not distinguish herpes gestationis from a bullous drug eruption. In the absence of immunologic studies, that distinction seems to me to be difficult, if not impossible. I would appreciate if the authors would elaborate on the distinctive features that they might have found helpful separating drug eruption from herpes gestationis and why they did not include it in their differential diagnosis.
Stenn KS. Herpes Gestationis. Arch Dermatol. 1977;113(9):1299. doi:10.1001/archderm.1977.01640090147038