Anjali Mehta Anjali Mehta Asked 10 months ago

What temperature is considered a fever in an infant?

My 6-month-old is a bit fussy and seems warm. We took her temperature under the armpit, but I always get confused what number means it's a fever for an infant.

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6 answers

Simran Kaur Simran Kaur Joined Mar 2026 8 months ago
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Hello, I'm not sure completely but for infants it's usually lower than adults, right? Is 100.4°F (38°C) also the mark for them, or is it different based on age?

Ashish Patel Ashish Patel Joined Mar 2026 8 months ago

For infants, any fever is serious. My pediatrician at Apollo always says if it's 100.4°F (38°C) or higher rectally, you need to call them immediately. Don't try to guess, just call the doc.

Pooja Sharma Pooja Sharma Joined Jan 2026 10 months ago

For an infant, a rectal temperature of 100.4°F (38°C) or higher is usually considered a fever. It's always best to consult a doctor right away to be safe.

Devi Prasad Devi Prasad Joined Mar 2026 8 months ago

Little ones need extra care and our positive thoughts. For infants, if their temperature taken rectally is 100.4°F (38°C) or more, please see a doctor without delay. Keep calm and trust the medical professionals.

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Consult a pediatric cardiac surgeon

Neelam Shah Neelam Shah Joined Mar 2026 7 months ago

Oh, my infant just had a fever last month! The doctor told us that for babies under 3 months, anything 100.4°F (38°C) or above rectally is considered a fever and needs urgent attention. We rushed him to the hospital, it was scary but he's fine now.

Arjun Menon Arjun Menon Joined Jun 2026 4 months ago

Listen, for infants, you really can't take chances. If you take their temperature rectally and it's 100.4°F (38°C) or higher, that's a fever, and you need to contact your pediatrician immediately. Better safe than sorry, always.

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