Few things worry parents more than a child with a fever. However, the American Academy of Pediatrics (AAP) emphasizes that fever itself is not dangerous—it's actually a sign that your child's immune system is working. Understanding when fever requires medical attention can help you respond appropriately.
What is a Fever?
According to the AAP, a fever is defined as a rectal temperature of 100.4°F (38°C) or higher. Normal body temperature varies throughout the day and can be affected by activity level, clothing, and time of day.
- •Rectal temperature: Most accurate for infants; fever = 100.4°F (38°C)+
- •Oral temperature: For children who can hold thermometer under tongue; fever = 100°F (37.8°C)+
- •Axillary (armpit): Least accurate; fever = 99°F (37.2°C)+
- •Temporal (forehead): Convenient but can be affected by sweating
When to Call Your Doctor
Contact your healthcare provider if your child has:
- •Any fever in an infant under 3 months old
- •Fever above 104°F (40°C) at any age
- •Fever lasting more than 3 days
- •Fever that goes away and then returns
- •Signs of dehydration (no wet diapers, no tears, dry mouth)
- •Unusual irritability or lethargy
- •A specific complaint (ear pain, sore throat, painful urination)
For infants under 3 months with any fever (100.4°F or higher), seek medical evaluation promptly. Young infants can have serious infections with minimal symptoms.
When to Seek Emergency Care
Go to the emergency room or call 911 if your child has fever along with:
- •Difficulty breathing or rapid breathing
- •Blue lips or fingernails
- •Severe headache or stiff neck
- •Confusion or difficulty waking up
- •Seizure
- •Purple rash that doesn't fade when pressed
- •Persistent vomiting
- •Signs of severe dehydration
Home Care for Fever
The AAP recommends focusing on your child's comfort rather than the number on the thermometer:
- •Keep your child well-hydrated with clear fluids
- •Dress in light clothing - don't bundle up
- •Keep room temperature comfortable
- •Acetaminophen (Tylenol) or ibuprofen (Motrin/Advil) for discomfort - follow dosing instructions carefully
- •Never give aspirin to children (risk of Reye's syndrome)
- •Lukewarm baths may help - avoid cold baths or alcohol rubs
The goal of fever treatment is comfort, not achieving a normal temperature. A child who feels well enough to play usually doesn't need medication, even with a fever.
Fever Medication Dosing
Always dose fever medications by weight, not age. Common guidelines:
- •Acetaminophen: 10-15 mg/kg every 4-6 hours (maximum 5 doses/24 hours)
- •Ibuprofen: 5-10 mg/kg every 6-8 hours (for children 6 months and older)
- •Never exceed recommended doses
- •Don't alternate medications unless directed by your doctor
Telehealth for Pediatric Fever
Many fever-related concerns can be addressed through a telehealth visit. At On Call Primary Care, we can evaluate your child via video, assess symptoms, and determine whether home care is appropriate or if an in-person visit is needed.
Our membership includes the whole family, so you can call anytime you're unsure whether your child's fever warrants concern. We'd rather hear from you early than have you worry unnecessarily.