A baby with a cold mostly needs help breathing through a stuffy nose, staying hydrated, and resting comfortably while the virus runs its course. There’s no cure for the common cold, and most over-the-counter cold medicines aren’t safe for young children. The good news: with a few simple techniques, you can make your baby much more comfortable while their immune system does the work. Most uncomplicated colds clear up within 10 to 14 days.
What a Baby’s Cold Looks and Feels Like
The first sign is usually a stuffy or runny nose. The mucus starts out clear and often thickens over a few days, turning yellow or green. This color change is a normal part of the immune response, not necessarily a sign of a bacterial infection.
Beyond the congestion, you may notice sneezing, coughing, a low fever, fussiness, trouble sleeping, and reluctance to eat or nurse. Babies rely on nose breathing during feeding, so even mild congestion can make meals frustrating for them. All of these symptoms are typical and expected.
How to Clear a Stuffy Nose
Nasal congestion is the biggest source of discomfort for a sick baby, and clearing it before feedings makes the biggest difference. The standard approach is saline drops followed by gentle suctioning with a bulb syringe.
To make saline at home, dissolve a quarter teaspoon of salt in one cup of warm (not hot) tap water. Make a fresh batch each time. Lay your baby on their back and place 3 to 4 drops of saline into each nostril using a clean dropper. Hold their head back for about a minute to give the saline time to loosen the mucus.
Then use the bulb syringe: squeeze the air out of the bulb first, gently place the tip into one nostril, and release. The suction pulls mucus into the bulb. Squeeze it onto a tissue, then repeat on the other side. Limit suctioning to no more than four times a day, since overdoing it can irritate delicate nasal passages. Always suction before meals, not after. Suctioning on a full stomach can cause vomiting.
Wash the bulb syringe in warm soapy water after every use, rinsing it several times by filling it with clean water and squeezing it out.
Add Moisture to the Air
Humid air helps loosen congestion and soothes irritated nasal passages. A cool-mist humidifier in your baby’s room is the safest option. The American Academy of Pediatrics recommends cool mist over warm-mist vaporizers because vaporizers boil water and can cause burns if a child gets too close or knocks the device over.
For quick relief, especially before bedtime, try a bathroom steam session. Run hot water in the shower for a few minutes with the door closed, then bring your baby into the steamy bathroom and hold them while they breathe in the warm, moist air. You don’t need to get in the shower. Just sitting in the room for several minutes can help loosen things up.
Keep Your Baby Hydrated
Sick babies lose fluid faster than usual, especially if they have a fever. Continue breastfeeding or bottle-feeding on demand, offering smaller, more frequent feedings if your baby won’t take a full one. For babies already eating solids, small sips of water between meals can help too.
Watch for signs of dehydration: fewer wet diapers than normal (or diapers that feel lighter), a sunken soft spot on top of the head, fewer tears when crying, or unusual irritability or lethargy. These signs mean your baby needs to be seen by a doctor promptly.
Managing Fever Safely
Not every fever needs to be treated. A mild fever is your baby’s immune system fighting the virus. But if your baby is clearly uncomfortable, acetaminophen can help. It’s dosed by weight, not age, and can be given every 4 to 6 hours with no more than 5 doses in 24 hours. Do not give acetaminophen to infants under 8 weeks old.
Ibuprofen is another option, but only for babies 6 months and older. It’s given every 6 to 8 hours, with a maximum of 4 doses per day. Your pediatrician’s office can confirm the right dose for your baby’s weight if you’re unsure.
One important threshold to know: a rectal temperature of 100.4°F (38°C) or higher in a baby under 3 months old requires immediate medical attention, even if the baby looks fine otherwise. Young infants can’t fight infections the way older babies can, so fever at that age is taken seriously.
What You Should Not Give Your Baby
Over-the-counter cough and cold medicines are not safe for young children. The FDA warns against using them in children under 2 because of the risk of serious, potentially life-threatening side effects. Most manufacturers now label these products with a stronger warning: do not use in children under 4. This includes homeopathic cough and cold products, which the FDA says have no proven benefits and should not be given to children under 4.
Never give honey to a baby under one year old, even as a cough remedy. Honey can contain bacterial spores that produce toxins in an infant’s immature digestive system, leading to infant botulism, a form of paralysis. After age one, children develop enough protective gut bacteria to handle these spores safely.
Helping Your Baby Sleep
Congestion tends to feel worse at night, and a baby who can’t breathe through their nose won’t sleep well. Running a cool-mist humidifier near the crib and doing a saline-and-suction session right before bed can make a real difference. The bathroom steam treatment is especially useful as part of a pre-sleep routine.
Keep your baby sleeping on their back on a firm, flat surface as always. It may be tempting to prop them up, but pillows, wedges, and inclined sleepers are not safe for infants. A stuffy nose is miserable, but safe sleep positioning matters more.
Signs That Need Medical Attention
Most colds are harmless, but certain signs mean your baby is working too hard to breathe or fighting something more serious than a cold. Watch for nasal flaring, where the nostrils spread wide with each breath. Look at your baby’s chest: if the skin pulls inward below the neck, under the breastbone, or between the ribs during breathing, that’s called retractions, and it means your baby is struggling to get enough air. Either of these signs warrants a call to your pediatrician or a trip to urgent care.
Also seek medical attention if your baby has a fever lasting more than a few days, refuses to drink, shows signs of dehydration, develops an earache (often signaled by tugging at the ear and increased crying), or if symptoms haven’t improved at all after about two weeks. And again, any fever of 100.4°F or higher in a baby younger than 3 months is an emergency.