Hi..
Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concerns..
As per your complain it seems that you had an
allergic reaction to the antibiotic
Bactrim given to you leading to itchy rashes and
urticaria or itching..
It is one of the common presentation of allergy to antibiotic that leads to rashes and itching..
Many a times when the reaction is severe it cannot resolve immediately after taking anti allergics and needs a longer course of anti allergics as well as at times oral
steroids can also be given..
As far as Bactrim is concerned t will be completely eliminated from the body in about 72 hours..
You should also immediately stop taking the antibiotics and consult your treating physician and get evaluated and he can give you injectable steroid to relieve the symptoms faster..
You can also be advised to apply steroid ointment over the rashes..
Doing cool compresses and applying
Calamine lotion can also help..
Drink plenty of water to excrete the drug faster from the body..
Hope this information helps..
Thanks and regards.
Dr.Honey Nandwani Arora.