Q: My child was diagnosed with PFAPA syndrome but now gets a fever every week. Should we see a specialist?

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 has been getting fevers at one-week intervals: starting on November 30 (38.0°C), December 12 (38.2°C), December 23 (38.8°C), and again today. The pediatrician only says my child's throat is swollen.

In 2021, my child was diagnosed with PFAPA syndrome at a university hospital. I thought it was improving because the intervals between fevers had lengthened to once every month or two, and the fevers were well-controlled with fever reducers instead of steroids.

However, since late November, the fever has been returning every week without any other specific symptoms. Besides a slight loss of appetite, my child's overall condition is good. Today, exactly one week later, the fever is back. Should we consult a pediatric infectious disease specialist?

Answer:

I understand your concern, especially since you have been managing your child's PFAPA syndrome since 2021 and the fevers have suddenly started repeating at one-week intervals.

Understanding the Current Situation

Currently, your child is experiencing fevers about 7 days apart with a swollen throat, but no other major symptoms. While their appetite has slightly decreased, their overall condition remains good. Previously, the PFAPA was well-managed with fever reducers.

PFAPA Relapse vs. New Cause

PFAPA is characterized by periodic fevers accompanied by pharyngitis (sore throat), stomatitis (mouth sores), or enlarged lymph nodes. The intervals are typically 3 to 8 weeks, though this varies by individual. Since the intervals have shortened to just one week with only a swollen throat, the possibilities include:

1. A change in the PFAPA pattern.

2. Repeated viral infections (common with exposure at daycare or school).

3. Another periodic fever syndrome or an underlying immune issue.

What to Do Now

✅ Keep a Symptom Diary (Essential for your next visit):

Track the dates of the fevers, highest temperatures, and duration. Note any throat swelling, mouth sores, or enlarged lymph nodes. Record the types and doses of fever reducers used, how quickly they worked, and any changes in your child's appetite, activity level, and sleep.

✅ Consult Your Current Pediatrician First:

Explain the situation clearly: "My child has a history of PFAPA, but the fever intervals have recently shortened to one week. Should we consider additional tests or reconsider steroid treatment?" Ask if blood tests (such as CBC, CRP/ESR) and a throat culture are necessary.

✅ Timing for a Specialist Visit:

If your current pediatrician confirms a pattern change and the cause remains unclear after initial tests, consider asking for a referral back to a pediatric infectious disease specialist or a pediatric rheumatologist at a university hospital. A step-by-step approach under your primary doctor's guidance is the most efficient route.

Warning Signs (Seek Same-Day Medical Evaluation If):

⚠️ The fever lasts for more than 3 days or exceeds 39.5°C.

⚠️ Throat swelling worsens, causing difficulty swallowing or breathing.

⚠️ Joint pain, rashes, or abdominal pain develop.

⚠️ Your child becomes unusually lethargic or their urine output decreases significantly.

PFAPA usually improves as a child grows, but any change in the fever pattern requires re-evaluation. Please start by organizing a symptom diary and visit your pediatrician to discuss these recent changes and determine if further testing is needed.

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

fevercoach.us

Apple App Store

Google Play

🌐 Also available in: Español · 한국어