alergic reaction to bactrim

[sfler2000]

I am 6wks pregnant.  I wk before doctor prescribed bactrim because of a bladder infection.  After almost finishing the bottle I started to have rash all over my body, since it was starting they were smaller, the doctor told me to start using benadril every 6-8 hrs, nothing have change.  I have the rash all over my body, bigger and different.  In my legs they look like red pimples, my back is uniform like when you have sun burn, but this rash is all over my body, after a day seeing the doctor is itching but I feel a burning sensation sometimes in my legs.

I just dont want to keep taking medication.  What would be the best solution for this topically and orally and how long should it take to this to dissapear.  

[Dr_Aparna]

Hi,
The drug reaction you are experiencing is called hives.Hives are red, itchy welts or swellings on the skin that often come in clusters. Hives can appear anywhere on the body, cropping up either in one small area or covering large patches of skin. They most often occur as part of an allergic reaction. No one lesion lasts more than 24 hours, but new ones may continue to appear until the condition resolves.

When an irritant comes into contact with your body, your immune system sends chemicals, including histamine, to fight it. The sudden spike in histamine levels can cause an outbreak of hives in the upper layers of the skin. Hives are often caused by a hypersensitivity to drugs (any drug can touch off an allergic reaction, although allergies to penicillin, sulfa, and aspirin are especially common).

To soothe itchy skin, try cold compresses,  a cool shower, or a tepid bath with a few tablespoons of cornstarch (the kind sold in drugstores) thrown in.
Calamine lotion or menthol/Camphor based creams can be applied on the irritated skin to soothe it.

Orally Benadryl should help relieve you of the allergy but this could take time since you had nearly finished the course of antibiotics.
It could take anywhere from a fortnight to a month to see the condition resolved..You can take the oral medication for a week and stop, by which time the resolution of the rash would have begun. The topical treatments can be continued till you are relieved of the symptoms.

ref:http://www.myonlinewellness.com/topic/hivestreatment