I have been taking Bactrim for 8 days for a sinus infection and ear infection . Today I woke up with a rash that was on my neck and chest and now is on my entire torso and arms. I take Claritin D every day for sinus and allergy problems. I am also allergic to penicillin. What do I do at this point? Do I just wait for it to go away? How long will it take before the rash goes away?
Hello, Please stop taking Bactrim immediately and visit your doctor. Bactrim is a combination of Trimethoprim and sulfamethoxasole. Rash and Urticaria is a common adverse effect of cotrimoxasole or Bactrim. Severe reactions like Stevens-Johnson syn Chat Doctor.