The Jarisch-Herxheimer reaction.
D000707:Anaphylaxis / Q000209:etiology; D000818:Animals; D004731:Endotoxins; D006801:Humans; D010406:Penicillins / Q000009:adverse effects / Q000627:therapeutic use; D011817:Rabbits; D013577:Syndrome; D013587:Syphilis / Q000150:complications / Q000188:drug therapy*; D014210:Treponema pallidum
D004731:Endotoxins; D010406:Penicillins