Q: My 19-month-old has had a fever for 4 days and it won't drop below 37.8°C even with continuous cross-dosing. Should I keep giving fever reducers?
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 19-month-old baby has been having a fever from Thursday night to Monday. Even after giving fever reducers, the temperature does not drop below 37.8°C (100°F). We are currently traveling, making it difficult to visit a hospital right now. Initially, I gave 3.5 ml of medication, and since yesterday, I increased it to 4-5 ml as instructed based on weight, but the fever remains above 38°C (100.4°F).
I am wondering if I should keep giving the fever reducer as long as the temperature is over 38°C. I heard that taking too much medicine can be harmful. I have been alternating different fever reducers (cross-dosing) every two hours continuously.
Answer:
I understand it must be very concerning to deal with a high fever lasting for four days, especially while you are away from home.
Immediate Danger Signs
Seek local urgent care or an emergency room today if ANY of the following apply:
Difficulty breathing (e.g., skin pulling in under the ribs, nasal flaring, wheezing)
Difficult to wake up, significantly decreased eye contact, or highly lethargic
No urine for over 8 hours, or the lips and tongue are extremely dry
Stiff neck or severe headache accompanied by repeated vomiting
Red spots or a rash on the skin that does not fade or turn white when pressed
If none of these symptoms are present, and the child is drinking small amounts of fluids, stays awake, and makes eye contact, you can follow the steps below.
Fever Reducer Principles
The goal is comfort, not a specific number: 37.8°C (100°F) is a mild fever. If your baby is not uncomfortable, there is no need to give medication. Even if the temperature is 38°C (100.4°F) or higher, if they are playing well and drinking fluids, you can simply observe without giving medication.
Cross-dosing is only for necessary situations: Start with one medication. Only consider adding a different medication 2-3 hours later if the child is still very uncomfortable or in distress. You must adhere to the minimum interval for each medication (Acetaminophen every 4-6 hours, Ibuprofen every 6-8 hours). Continuously giving medication every 2 hours can lead to overmedication.
Recheck the dosage: Assuming a 19-month-old weighs about 10-12 kg (22-26 lbs), carefully check the concentration (mg/mL) on your specific medicine bottle and calculate the dose based on their exact weight. Always use the provided oral syringe, not a kitchen spoon, for accurate measurement.
What to do right now:
Prioritize hydration: Offer small sips of water, breast milk, or formula every 5-10 minutes.
Keep clothing light: Dress the child in a single light layer and maintain a comfortable room temperature of 20-22°C (68-72°F).
Use medication only when uncomfortable: Stick to one type of medicine and follow the required time intervals.
Avoid physical cooling: Do not use tepid water towels or ice packs, as these can cause shivering and discomfort.
When to definitively seek in-person medical attention:
The fever lasts for 5 days or more.
Any of the danger signs mentioned above appear.
New symptoms develop, such as ear pain, throat pain, or a worsening cough.
The fever reducer has no effect at all, and the child continues to be excessively fussy.
Since you are currently in a location where accessing a clinic is difficult, consider utilizing local telehealth services, consulting a pharmacist, or using your travel insurance company's 24-hour nurse advice line if available. Focus on keeping your baby hydrated and strictly follow the medication intervals. If the fever reaches the 5-day mark or new symptoms appear, please ensure your child is evaluated by a doctor in person.
For extra peace of mind and clear guidance when tracking your child's symptoms, the FeverCoach app is always there to help.
