Hello i have gone through your question and understand your concern. Let me enlighten you in brief about Jarisch-Herxheimer reaction or what is commonly called as Herxing. It is basically an unavoidable reaction or immune response of body caused when treatment for disease is initiated due to death of disease causing pathogen not by antibiotics. In a positive way Herxing shows effective antibiotic therapy and is seen as evidence of continuing elimination of these very persistent bacteria. The above mention symptoms of hot flashes are suggestive of Herxing but the symptoms of Herxing vary person to person, if symptoms worsen contact the treating doctor. Thank you.