In dermatology practice, patients frequently present with a recalcitrant eruption distinguished by the presence of edematous, urticarial, intensely pruritic papules. After analysis of patient biopsy specimens, the dermatopathologist will often report a “dermal hypersensitivity reaction” (DHR) characterized by an eosinophil-rich infiltrate. The only clinical differentials that correspond to this pathologic diagnosis are arthropod bite and drug eruption, neither of which is clinically relevant to the present case.