What does an allergic reaction to sulfamethoxazole look like?

Symptoms of an allergic reaction to sulfa drugs include rash or hives, itchy skin or eyes, and swelling. Complications of sulfa allergy include anaphylaxis and Steven-Johnson syndrome. Both of these are considered medical emergencies.

Can sulfamethoxazole cause hives?

Skin rash: Trimethoprim – sulfamethoxazole may cause skin rash or itchiness with or without a rash. Rarely, people taking trimethoprim – sulfamethoxazole experience a severe skin reaction that can be life-threatening.

What does antibiotic allergy rash look like?

The rash will resemble small, flat, pink spots that appear in a symmetrical pattern. The rash is not contagious and usually begins to fade after 3 days but may take up to 6 days to disappear. People taking amoxicillin may also develop hives.

What do drug hives look like?

The most common type of drug reaction is hives, also known as urticaria. They are raised, swollen, red or flesh-colored bumps or welts that appear on the skin. They can take on many shapes and can be very itchy. They usually develop in groups and may cover large areas of skin.

Can Bactrim cause hives?

It belongs to a family of medications commonly called “sulfa drugs.” If you experience any signs of an allergic reaction while taking Bactrim (sulfamethoxazole / trimethoprim), such as hives, rash, or swelling of the face, call your healthcare provider right away.

Can I take Benadryl with sulfamethoxazole?

Interactions between your drugs No interactions were found between Benadryl and sulfamethoxazole. However, this does not necessarily mean no interactions exist. Always consult your healthcare provider.

Should I stop taking Bactrim if I get a rash?

Bactrim should be discontinued at the first sign of a skin rash or any other worrying side effect. May lower blood sugar levels in people without diabetes. May interact with several other drugs including thiazides, warfarin, phenytoin, leucovorin, methotrexate, digoxin, and medications for diabetes.

How long does an antibiotic allergy rash last?

Hives usually disappear within hours. A maculopapular rash may take one to two weeks to go away and may get worse for a few days once the drug is stopped. General treatment recommendations include: stopping the medication.