<s>[INST] I am having a whole body allergic reaction to bactrium ds that started at 9pm last night and is continuing and getting worse and have new low-grade fever today. (Even on my face and my eyes feel swollen). What course of action is usually used for this? [/INST] Hi dear userI have gone through your question. I can understand your concern.If you have a whole body allergic reaction to bactrim the first action you must do is to STOP taking this drug and than you should meet as soon as possible an allergologist for the necessary treatement.Hope I have answered your question. If you have any further questions I will be happy to help.Thank you for using HCM.Wish you good health. </s>