Signs Your Newborn Is Sick: What Every New Parent Should Know

Signs Your Newborn Is Sick: What Every New Parent Should Know

Bringing a newborn home is one of the most beautiful — and terrifying — experiences of your life. Every little sound, color change, and behavior becomes something to analyze. Is this normal? Should I be worried? When do I call the doctor?

Most of the time, what you're seeing is completely normal. But there are specific signs that warrant immediate attention. Knowing the difference can give you confidence — and potentially save your baby's life.

Warning Signs That Require Immediate Medical Attention

1. Difficulty breathing

If your newborn is breathing very fast (more than 60 breaths per minute), grunting with each breath, flaring their nostrils, or you can see their ribs with each breath — call emergency services or go to the ER immediately. Never wait on breathing issues.

2. High fever or low temperature

A rectal temperature of 100.4°F (38°C) or higher in a baby under 3 months is a medical emergency. Call your doctor immediately. Equally, a temperature below 97°F (36.1°C) can also signal a problem.

3. Unusual skin color

Some yellowing (jaundice) is common in the first week, but watch for it spreading to the belly, arms, and legs. Blue or gray coloring around the mouth or fingertips is serious and requires immediate attention.

4. Won't eat or is eating much less than usual

Newborns need to eat frequently. If your baby is refusing to feed, is much harder to wake for feeds than usual, or has had significantly fewer wet diapers, call your pediatrician.

5. Lethargic or unusually difficult to wake

A newborn who is extremely limp, unresponsive, or very hard to rouse — even for feeding — needs to be seen immediately. This is different from normal sleepiness.

6. Persistent crying that seems like pain

All newborns cry, but a high-pitched, inconsolable cry that is different from their usual cry can indicate pain or illness. Trust your instincts — you know your baby.

Signs to Monitor Closely (Call Your Doctor)

These don't require an ER visit but do warrant a call to your pediatrician: persistent vomiting (not just spitting up), blood in stool or urine, swollen navel or penis, discharge or redness around the umbilical cord stump, or a soft spot on the head that appears bulging or sunken.

Trust Your Instincts

Pediatricians consistently say the same thing: if something feels wrong, call. You are not overreacting. You are doing your job as a parent. No doctor will ever be annoyed that you called about a newborn.

Get the Complete Guide

Our guide Signs Your Newborn Is Sick gives you a comprehensive, easy-to-reference breakdown of what's normal, what to watch, and when to act — so you can feel confident in those early weeks.

Get the full guide ($12) →

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