Q: My 14-month-old has had a low-grade fever for a month due to recurring ear infections. Do we need blood tests or hospitalization?
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 14-month-old baby has had a low-grade fever for almost a month. In late October, my baby was diagnosed with sinusitis and an ear infection, with temperatures fluctuating between 37.2°C and 37.8°C. We were prescribed antibiotics for two weeks and fever reducers for three days. After finishing those, the temperature stayed normal (around 37.0°C) for about three days.
Then, in mid-November, the fever returned (37.3°C to 37.7°C). We visited the pediatrician, who diagnosed another ear infection, and we are currently on day 10 of a new antibiotic course. At night, my baby's forehead feels cool and the fever seems to drop, but during the day, it fluctuates between 37.2°C and 37.7°C.
I know catching a new cold can cause a fever, but I am extremely worried because this low-grade fever has been going on for nearly a month. Does my baby need to be hospitalized to get blood tests done?
Answer:
It is completely understandable that you are anxious about your baby having a prolonged low-grade fever for nearly a month. Based on your description, your baby's activity, feeding, sleeping, and urination appear to be relatively normal, which is a reassuring sign.
Here are the key points to understand regarding your baby's current condition:
Low-grade fevers are common during recurrent ear infection treatment
Even while taking antibiotics, it can take 7 to 10 days for the inflammation from an ear infection to fully subside. A pattern where the temperature rises slightly during the day due to activity or feeding and then drops at night is often within the normal range.
37.0°C to 37.7°C is a borderline low-grade fever
For a 14-month-old, this level of temperature fluctuation can be entirely natural depending on their activity level, how warmly they are dressed, and the indoor temperature. The most important factor is not just the number on the thermometer, but whether their overall behavior, appetite, sleep, and urine output remain normal.
What to do at home right now:
Finish the antibiotics: Ensure you complete the full course of antibiotics exactly at the prescribed times and dosages. Do not stop the medication arbitrarily, even if symptoms seem to improve.
Environment: Keep the indoor temperature comfortable (around 20-22°C) and dress your baby in a light, breathable layer.
Hydration: Offer plenty of fluids frequently, such as breastmilk, formula, or water.
Temperature Log: Keep a record of your baby's temperature four times a day (morning, lunch, evening, and before bed), and note their activity level alongside the readings.
When to see the pediatrician immediately (Same-Day Visit):
Seek an immediate in-person evaluation if you notice any of the following warning signs:
The fever spikes to 38.0°C or higher again.
Signs of worsening ear pain (e.g., frequent crying, fussiness, or pulling at the ears).
Refusal to eat or drink, or if there is no wet diaper for over 8 hours.
Your baby is unusually lethargic, weak, or difficult to wake up.
The low-grade fever persists even after fully completing the current 10-day antibiotic course.
Regarding hospitalization and blood tests:
Based on your current description, hospitalization or immediate blood tests are not urgently required. However, you should discuss the next steps with your pediatrician during your follow-up visit. It would be helpful to ask them:
"If the low-grade fever continues after finishing these antibiotics, will further tests be necessary?"
"When should we recheck the ears to ensure the infection has completely cleared?"
"Is there anything we can do to help prevent these recurrent ear infections?"
Your doctor will monitor your baby's progress and schedule blood or imaging tests if clinical signs indicate they are necessary.
A final note on fever management: Only use fever-reducing medications if your baby's temperature is 38.0°C or higher and they are visibly uncomfortable. Giving fever reducers for temperatures in the 37°C range is generally unnecessary and can actually cause wider temperature fluctuations. Also, avoid using wet towels or tepid water massages. For now, continue the antibiotics as prescribed, maintain your temperature log, and follow up with your doctor for a re-evaluation once the medication course is finished.
For extra peace of mind and clear guidance when tracking your child's symptoms, the FeverCoach app is always there to help.
