Pathergy phenomenon
DefinitionThis section has been translated automatically.
Term for the triggering of a disease-specific lesion by an unspecific stimulus. Corresponding to the Koebner phenomenon in M. Behcet. Here, after intracutaneous injection of saline solution, a papule forms after about 48 hours. In a broader sense, the term is also used when specific disease symptoms are triggered by local trauma (e.g. in Pyoderma gangraenosum or leukocytoclastic vasculitis).