Jarisch-Herxheimer reaction

noun
Ja·​risch-Herx·​hei·​mer reaction | \ ˈyä-rish-ˈherks-ˌhī-mər- How to pronounce Jarisch-Herxheimer reaction (audio) \

Medical Definition of Jarisch-Herxheimer reaction

: an increase in the symptoms of a spirochetal disease (as syphilis, Lyme disease, or relapsing fever) occurring in some persons when treatment with spirocheticidal drugs is started

called also Herxheimer reaction

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