Nonrashes. Part I: the Koebner nonreaction
Bernhard, J.D.; Haynes, H.A.
Cutis 29(2): 158-164
1982
ISSN/ISBN: 0011-4162 PMID: 6460595 Document Number: 184214
"Nonrashes" range from pruritus that may signal an underlying systemic illness to delusional parasitosis associated with severe psychological disturbance. We report another kind of nonrash, the Koebner nonreaction or isomorphic nonresponse, that was manifested by the absence of a drug rash at the site of recently administered x-irradiation. We also present a compilation of a number of other nonrashes, such as the mitempfindungen (referred itch) and the prodrome of herpes zoster. The recognition of certain types of nonrashes may be lifesaving.