What is the prevalence of id reaction (autoeczematization)?

Updated: Oct 16, 2020
  • Author: Matthew P Evans, MD; Chief Editor: Dirk M Elston, MD  more...
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Answer

The exact prevalence of id reaction is not known. Dermatophytid reactions are reported to occur in 4-5% of patients with dermatophyte infections. Id reactions have been reported in up to 37% of patients with stasis dermatitis. Furthermore, an estimated two thirds of patients with contact dermatitis superimposed on stasis dermatitis develop an id reaction.

Race

The condition has no known predilection for any racial or ethnic group.

Sex

The condition has no known predilection for either sex.

Age

Predilections according to age group are unknown but are influenced by the primary cause of the reaction.


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