Q: Mild fever (37.3°C) 7 days after discharge for Kawasaki disease. Which fever reducer can I use while on aspirin?
- Myeongchan Kim, MD

- Jul 1
- 2 min read
Updated: Jul 8
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 discharged 7 days ago after being treated for Kawasaki disease. Since this morning, they have had a mild fever of 37.3°C (measured with an ear thermometer). What should I do? My child is currently taking aspirin. What kind of fever reducer is safe to use in this situation?
Answer:
Managing care after a Kawasaki disease discharge requires close attention. A mild fever of 37.3°C on the 7th day after discharge is something that should be observed carefully.
Immediate Checkpoints:
• Is there any peeling of the skin on the fingers or toes?
• Is there any joint swelling or pain?
• Are there any new rashes or changes in the lips?
Using Fever Reducers:
Since your child is currently taking aspirin, you must be careful with other medications:
• Use ONLY Tylenol (Acetaminophen).
• Strictly avoid Ibuprofen (e.g., Motrin, Advil) as it can interact negatively with aspirin.
• Administer the fever reducer only if the temperature reaches 38.0°C or higher and your child is visibly uncomfortable.
When to Visit the Hospital:
Seek immediate medical attention if you notice any of the following:
• A fever of 38.0°C or higher persists.
• Previous symptoms of Kawasaki disease recur (such as a rash, bloodshot eyes, or a "strawberry" tongue).
• Chest pain or shortness of breath.
• Extreme fussiness, irritability, or lethargy.
Because Kawasaki disease can occasionally recur, even a mild fever needs to be monitored very cautiously. Please contact your child's attending doctor today for a consultation regarding this mild fever. If you notice any sudden changes in symptoms or if the fever spikes, take your child to the emergency room immediately.

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




