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What Causes Rashes On The Arms While On SMZ-TMP DS?

Posted on Tue, 12 Jul 2016

Question: I had an abcess and was prescribed a 10 day dose of 2 X a day of SULFAMETHOXAZOLE-TMP DS TABLET. I have taken all but the last dose. The access is cleared I think. When I woke this morning I had a rash on my inner arms but I thought they may have been mosquito bites. However as the day progressed the rash became more and now is on my entire body, back, neck, torso, thighs and arms. The rash is red and many bumps are large and irregular. The warning said if rash or blisters appear seek medical attention. Can I wait until morning to call my Dr or should I go to emergency now. It is almost 2:00 am here in Oklahoma. I am 78 years old.

Answered by Dr. Dr. Rahul Kumar (27 minutes later)

Brief Answer:
Take an antihistamine tablet

Detailed Answer:
Hello
Thanks for the query.
Probably you have developed drug allergy.
Take an antihistamine tablet and apply a mild steroid cream like cortisone.
Yes you can wait till morning.
Let me know if you have any other doubts.
Thank you.

Note: Hope the answers resolves your concerns, however for further guidance of skin related queries consult our Dermatologist.Click here to book a consultation

Above answer was peer-reviewed by : Dr. Nagamani Ng