Q: My child was diagnosed with Influenza A and now has a stomachache. Is this normal?

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 child was diagnosed with Influenza A and received IV fluids yesterday around 9 PM. Their fever was 38.6°C until early this morning, but it has now dropped to 37.9°C. However, my child started complaining of a stomachache at 6 AM. Should we revisit the clinic? Their hands and feet are warm, and they have gone back to sleep for now. They also have a cough and yellow nasal discharge. Is a stomachache a typical symptom of the flu?

Answer:

It is completely understandable to be worried when your child complains of a stomachache after being diagnosed with the flu and receiving IV treatment.

[Current Situation Summary]

• Confirmed Influenza A + received IV fluids yesterday evening (likely including an antiviral medication).

• Fever has decreased from 38.6°C to 37.9°C.

• New symptom: Stomachache starting early this morning.

• Hands and feet are warm, the child is currently resting, but has an accompanying cough and yellow nasal discharge.

[Can the Flu Cause a Stomachache?]

Yes, the flu virus itself can cause mild abdominal pain and nausea in children. However, if any of the following warning signs are present, an in-person medical evaluation is needed today:

• The child shows severe pain when the stomach is gently pressed, or the abdomen feels hard/rigid.

• Repeated vomiting or severe diarrhea that makes hydration difficult.

• No urination for more than 8 hours.

• Lethargy, extreme drowsiness, or slow responses when woken up.

• Fever spiking back up to 39°C or higher, or rapid/labored breathing.

[What You Can Do at Home Right Now]

• Provide fluids frequently in small amounts (water, oral rehydration solutions, or light porridge).

• Keep the child's stomach warm and let them rest in a comfortable position.

• Keep track of the exact location and severity of the stomachache, as well as any episodes of vomiting or diarrhea.

• Continue to administer any prescribed flu medications exactly as directed by your doctor.

To summarize the actionable guidance: Mild abdominal pain is a possible flu symptom. If the stomachache is mild, the child is drinking fluids well, and urinating normally, you can observe their condition closely for the day. However, if you notice severe pain, signs of dehydration, or any of the warning signs listed above, please revisit your doctor for an immediate evaluation.

For extra peace of mind and clear guidance when tracking your child's symptoms, the FeverCoach app is always there to help.

https://fevercoach.us