Q: Should my 9-year-old stop sinusitis antibiotics due to severe vomiting from gastroenteritis?
- Myeongchan Kim
- 10 hours ago
- 3 min read
Medically reviewed by Sang Hyun Ahn, MD
Content edited by Myeongchan Kim, MD
This post is a dramatization of a question and answer session experienced by our actual medical reviewers. Please note that this content is for informational purposes only and does not constitute medical advice. Always consult with a qualified healthcare professional for any health concerns or before making any decisions related to your health or treatment.
Question:
My 9-year-old child had a fever and was recently diagnosed with sinusitis. The doctor prescribed a liquid antibiotic to take for about a week. However, after taking it for just one day, my child caught a stomach bug (gastroenteritis) and started vomiting constantly. They throw up even after drinking water, and the fever has been ongoing for three days—I'm not sure if it's from the sinusitis or the stomach bug.
My child seemed dehydrated, so we went to the clinic, where they received IV fluids and were prescribed gastroenteritis medication along with anti-nausea medicine. In this situation, should we stop the antibiotics and focus solely on treating the stomach bug, or should we continue giving the antibiotics along with the anti-nausea medicine? The blood test showed an inflammation level (CRP) of around 1.5. I am very worried that if we stop the antibiotics, the sinusitis will get much worse. What should we do?
Answer:
It must be very difficult for both you and your child to deal with gastroenteritis while already treating sinusitis.
Whether you should continue the antibiotics depends largely on how well the vomiting is controlled and how the sinusitis symptoms progress.
If the vomiting is severe and your child cannot keep medicine down:
If your child throws up immediately after taking the medicine, you should temporarily stop the antibiotics and prioritize treating the gastroenteritis. Focus on hydration, electrolyte replenishment, and administering the anti-nausea medication. You can consider resuming the antibiotics once the vomiting has subsided and your child can tolerate taking things by mouth.
If the anti-nausea medication works and your child can keep medicine down for 30 to 60 minutes:
You can continue the antibiotics. If the antibiotics are meant to be taken after meals, try giving them with a very small amount of mild food like rice porridge. Completing a full course of antibiotics (usually 5 to 7 days for sinusitis) is important, so it is best to continue if your child's stomach can tolerate it.
Regarding the inflammation level:
A CRP level of 1.5 is considered relatively mild. Pausing the antibiotics for 2 to 3 days is unlikely to cause the sinusitis to rapidly worsen. However, if the medication is stopped for more than 3 days, the risk of the sinus infection returning increases. Therefore, aim to resume the antibiotics as soon as the vomiting is properly controlled.
Home Care Guidelines:
Once the vomiting stops, try giving very small sips of water, electrolyte solutions, or clear broth every 30 to 60 minutes.
Give the anti-nausea medication first, wait 30 to 60 minutes, and then try administering the antibiotic.
If your child goes 2 to 3 hours without vomiting, you can slowly introduce bland, soft foods like bananas or porridge.
Keep a close eye on the sinusitis symptoms, such as changes in the color of nasal discharge, facial pain, or worsening cough.
When to Seek Immediate Medical Attention:
Please visit your pediatrician or an emergency room immediately if you notice any of the following:
Vomiting continues for more than 12 hours or your child cannot keep any fluids down at all.
There is no urine output for more than 8 hours, or their lips and tongue are completely dry (signs of severe dehydration).
The fever remains at or above 39°C (102.2°F) persistently, or your child becomes extremely lethargic.
Your child develops facial swelling, a severe headache, or a stiff neck.
To summarize: If the vomiting is controlled, continue the antibiotics. If not, it is generally safe to pause them for 2 to 3 days to prioritize treating the stomach bug. Please follow up with your prescribing pediatrician to confirm exactly when to resume the antibiotics and whether any dosage adjustments are needed.
For extra peace of mind and clear guidance when tracking your child's symptoms, the FeverCoach app is always there to help.
