Q: My 11-year-old son has had a fever from tonsillitis for over a week. Should we go to the ER?
Updated: Sep 7
Medically reviewed by Sang Hyun Ahn, 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 11-year-old son has been having a fever due to tonsillitis since last Wednesday. His throat was covered with white patches of inflammation. He received IV fluids twice last week. The interval between his fevers has widened a bit, and it now spikes about every 7 hours. We have enough medication to last through the long holiday, and thankfully, he is eating well.
How long does a fever from tonsillitis usually last? It is our first time dealing with a fever that has lasted this long. Since it is a holiday, should we take him to the emergency room to get admitted?
Answer:
You must be very worried since your 11-year-old son has been suffering from tonsillitis for over a week.
Evaluation of the tonsillitis course:
• Bacterial tonsillitis: Usually improves within 3-5 days after taking antibiotics.
• Viral tonsillitis: Fever can last for 7-10 days.
• Persisting for more than 7 days + receiving IV fluids twice = Needs re-evaluation.
Checking current status:
→ Fever intervals have widened to 7 hours (A good sign).
→ Eating well (A positive sign).
→ However, persisting for 8 days is quite long.
When to go to the emergency room:
• Having difficulty breathing.
• Unable to swallow saliva and drooling.
• Neck is swollen and unable to move the head.
• Fever over 39°C persists.
• Signs of dehydration (decreased urination).
Recommendations during the holiday:
Ensure he is taking his antibiotics exactly as prescribed.
Alternate fever reducers (Tylenol and Ibuprofen).
Drink warm water frequently.
Use a throat spray or gargle.
→ If there is no improvement by tomorrow, I recommend visiting the emergency room.
→ It is necessary to check for possible complications such as a throat abscess or antibiotic resistance.
While his condition does not require an immediate rush to the emergency room right this moment, 8 days of fever is definitely on the longer side. Please have him re-examined by a doctor as soon as the holiday is over!
For extra peace of mind and clear guidance when tracking your child's symptoms, the FeverCoach app is always there to help.
