Nummular eczema and isomorphic Koebner response.

This paper reports on cases of nummular eczema (NE) occurring at the sites of surgical scars, thought to be a result of isomorphic Koebner response (KR). Nummular lesions appeared on the surgical scar in five cases, extended far beyond the surgical scar in one case and developed on a drain insertion scar in one case. Three patients developed nummular lesions on areas other than their surgical scar as well. [Extracted from the article]