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What Causes Itching Under Breasts, Elbows And Ears After Taking Sulfameth Trimethoprim?

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Posted on Mon, 2 Feb 2015
Question: I stopped taking (finished the 7 day treatment for urinary tract infection) 2 days ago, sulfam+tri 800/160 mg. along with macrobid. I started itching yesterday morning under the breast elbows ears and more. there are welts
doctor
Answered by Dr. Kathy Robinson (36 minutes later)
Brief Answer:
Possible allergic reaction

Detailed Answer:
Hello and thank you for your question.

It sounds like you are having an allergic reaction to one of the medications. You need to let your doctor know about this as soon as possible.

You can take an Antihistamine like Benadryl for the itching and make sure that you are drinking lots of water. It will be very difficult to determine which antibiotic you are having the reaction to since you were taking both of them, but it is very important that your doctor knows about this reaction. You can become allergic to a medication at any time, even if you have taken it before.

It is important that you and your doctor be aware of this because if you are exposed to the medication again, the reaction may be worse.
Above answer was peer-reviewed by : Dr. Vinay Bhardwaj
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Follow up: Dr. Kathy Robinson (35 minutes later)
will these symptoms eventually decrease? And is this late in onset?
doctor
Answered by Dr. Kathy Robinson (5 hours later)
Brief Answer:
yes symptoms will ease iff

Detailed Answer:
Hello and thank you for your follow up. The antihistamines will help with symptoms while the medication gets out of your system. It can take several days. Yes it is late. Drug reactions usually begin either immediately upon taking a medication or a few days into the course. Later reactions are possible though are less common. I hope you are feeling better soon.
Note: For further information on diet changes to reduce allergy symptoms or to boost your immunity, Ask here.

Above answer was peer-reviewed by : Dr. Vinay Bhardwaj
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Answered by
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Dr. Kathy Robinson

General & Family Physician

Practicing since :1989

Answered : 3535 Questions

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What Causes Itching Under Breasts, Elbows And Ears After Taking Sulfameth Trimethoprim?

Brief Answer: Possible allergic reaction Detailed Answer: Hello and thank you for your question. It sounds like you are having an allergic reaction to one of the medications. You need to let your doctor know about this as soon as possible. You can take an Antihistamine like Benadryl for the itching and make sure that you are drinking lots of water. It will be very difficult to determine which antibiotic you are having the reaction to since you were taking both of them, but it is very important that your doctor knows about this reaction. You can become allergic to a medication at any time, even if you have taken it before. It is important that you and your doctor be aware of this because if you are exposed to the medication again, the reaction may be worse.