The designation "nummular eczema," "orbicular eczema," or "discoid eczema" connotes an eruption of distinctive morphologic appearance and course. The etiology, however, remains obscure.
We have had the opportunity to review the case records of 516 ambulatory patients whose dermatoses were diagnosed as nummular eczema and to follow the clinical course of 125 of these patients over the past eight years.
Perhaps the most modern detailed description of this dermatosis is that given by Sulzberger and Wolf.1 The condition is characterized by the appearance of discrete coinshaped erythematosus plaques studded with small vesicles and papulovesicles. The lesions enlarge by confluence with satellite elements or by growth of the individual patches. The distribution and location of the lesions are characteristic; the affected areas usually being the extensors of the extremities, especially the dorsa of the hands. Not infrequently the thighs and legs are affected,
WEIDMAN AI, SAWICKY HH. Nummular Eczema: Review of the Literature: Survey of 516 Case Records and Follow-Up of 125 Patients. AMA Arch Derm. 1956;73(1):58–65. doi:10.1001/archderm.1956.01550010060006
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