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Q: My toddler gets a fever and swollen throat every 5 to 7 days. Should we get a blood test?

  • Myeongchan Kim
  • 2 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 26-month-old toddler keeps getting a fever every 5 to 7 days. It is not a continuous fever. They get a fever on the first day, I give them medication, and they are fine for about 5 days. Then, after 5 to 7 days, the fever returns. When we visit the pediatrician, they say my child's throat is very swollen. I give the medication again, and the fever drops quickly within a day. However, this cycle has already repeated three times. Is it normal to have recurring fevers in such a short period? Should we ask for a blood test?


Answer:

It is completely understandable to be worried when your toddler experiences recurring fevers over a three-week period.


Key Points to Consider:

  • Consecutive Viral Infections: Toddlers have developing immune systems and can easily catch back-to-back viral infections, especially if they attend daycare or are frequently around other children. If the fever drops quickly after one day of medication and your child remains active and well-hydrated, it is highly likely that these are independent, mild viral infections.

  • Periodic Fever Syndrome: However, if the fever repeats at exact 5 to 7-day intervals with the exact same symptoms (like a swollen throat) and no other typical cold signs (such as a runny nose, cough, or diarrhea), a condition like Periodic Fever, Aphthous Stomatitis, Pharyngitis, and Adenitis (PFAPA) syndrome might be considered by your doctor.


What You Can Do Now:

  1. Keep a Fever Diary: This will be crucial for your next doctor's visit. Record the start dates of the fever, the highest temperature, duration, accompanying symptoms (throat swelling, mouth ulcers, swollen lymph nodes, rash, etc.), how fast the medication works, and the child's energy levels during the fever-free days.

  2. Minimize Infection Exposure: If your child attends daycare, wait until they are fever-free for at least 24 hours without medication before sending them back. Encourage good hand hygiene at home.

  3. Support Immunity: Ensure your child gets plenty of rest, hydration, and a balanced diet during their healthy periods to help their immune system recover.


Questions to Discuss with Your Pediatrician:

Bring your fever diary to your next appointment and consider asking your doctor:

  • "Is a blood test (like CBC or CRP) necessary at this point, and will it change our treatment plan?"

  • "Could this be a periodic fever syndrome like PFAPA?"

  • "Because the throat swelling keeps repeating, should we consider an ENT (Ear, Nose, and Throat) specialist referral?"


When to Seek Immediate Medical Evaluation:

Please take your child to see a doctor for a same-day assessment if:

  • The fever lasts for more than 3 days, or a high fever (above 38.5°C or 101.3°F) does not come down with fever reducers.

  • Your child has difficulty swallowing, or you notice abnormal breathing sounds.

  • Your child is extremely lethargic, refuses all fluids, or has no wet diapers for 8 hours.

  • New symptoms appear, such as a new rash, joint pain, or severe abdominal pain.


Start keeping your symptom log today. Based on your child's fever patterns and a physical examination, your pediatrician will help you determine if a blood test or a referral to a specialist is the best next step.


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






 
 
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