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What Cause Mouth Sores While On Antibiotics?

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Posted on Tue, 5 Jul 2016
Question: My 21 year old son was seen by a doctor this past Monday due to a high fever and was diagnosed with tonsillitis and prescribed amoxicillin. He then developed sores in his mouth on tongue, swollen gums and sores around his mouth. He has not been able to eat or drink due to the pain and is very fatigued. He's lost 11lbs in a week. Should I take him to the ER!? We called the doctor Wednesday about the mouth issue and he called in valtrex but it's not getting better. Not sure what the hospital could do. Could it be an allergic reaction to the antibiotics? He's never sick and I'm concerned.
doctor
Answered by Dr. Shafi Ullah Khan (28 minutes later)
Brief Answer:
Needs thorough evaluation and care

Detailed Answer:
Thank you for asking

I read your question and i understand your concern. Tonsillitis can be very severe some times hampering all activities including feeding. Prefer liquid diet and take adequate fluids. Antibiotics allergies are unlikely, however canker sores are less common with tonsillitis but possible. Get him evaluated for alternative causes like mononucleosis etc. Get a throat swab done, see if antibiotics he is using are sensitive or not. if issues persist, he may be hospitalised for IV care and considered for tonsillectomy.

I hope it helps. Take good care of your son and don't forget to close the discussion please.

Regards
Khan
Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar
doctor
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Follow up: Dr. Shafi Ullah Khan (2 minutes later)
The doctor did blood work to rule out mononucleosis. He just can't eat or drink - even water hurts. Should I take him to the ER? I don't want to go there and spend the money if they cannot help him. I just don't know what to do.

Thank you for your response.
doctor
Answered by Dr. Shafi Ullah Khan (25 minutes later)
Brief Answer:
Yes go to ER

Detailed Answer:
If your son can't take oral even fluids, i am afraid he will need hydration and nutrition supplementation via intravenous route and that will need a visit to a hospital. ER even if you say he cant take oral. As i said he may need hospitalisation.
Note: For further follow up on related General & Family Physician Click here.

Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar
doctor
Answered by
Dr.
Dr. Shafi Ullah Khan

General & Family Physician

Practicing since :2012

Answered : 3613 Questions

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What Cause Mouth Sores While On Antibiotics?

Brief Answer: Needs thorough evaluation and care Detailed Answer: Thank you for asking I read your question and i understand your concern. Tonsillitis can be very severe some times hampering all activities including feeding. Prefer liquid diet and take adequate fluids. Antibiotics allergies are unlikely, however canker sores are less common with tonsillitis but possible. Get him evaluated for alternative causes like mononucleosis etc. Get a throat swab done, see if antibiotics he is using are sensitive or not. if issues persist, he may be hospitalised for IV care and considered for tonsillectomy. I hope it helps. Take good care of your son and don't forget to close the discussion please. Regards Khan