7393fc91_SA_Abscess_and_Septra_Reaction__Overview
[Day] Day 24 [Date] May 31st [My Story] On the evening of May 31st, I experienced the first widespread itching sensation over my body during the "flu". The earlier heat rash was not itchy. The itching kept me up all night. Because I had gotten heat rash from the fever sweats, I attributed it to the "flu", but this was actually the ongoing allergic reaction to Septra. Not knowing this, I continued to finish the course of Septra (until June 3rd). In hindsight, one important clue that something was wrong was that my friend did not report rash/itching symptoms at all. Another confounding factor was that I have a chronic but mild allergic itch condition that I take an antihistamine (Zyrtec) regularly for. So at first I thought that the "flu" had magnified the underlying reaction. This also meant the Zyrtec masked the actual onset of the condition until it became more severe. Medically, a very important symptom and window of opportunity was missed due to the confluence of these factors. [Suggestions and Advice] If you are taking Septra and you experience any rash or itching, stop taking Septra and see your physician immediately. While skin reactions are actually typical for Septra, they also tend to be very mild. However, from time to time, the skin reaction can be severe. While Septra is a potent antibiotic, this common side-effect is one of the main reasons it is not used as a first-line antibiotic. [Overview] 
Rash Onset
MRSA Abscess and Septra Reaction
Overview