Babies in the Rainy Season: Rashes, Mosquitoes and Diarrhoea

The short answer: in the rainy season, a baby needs three things more than any remedy: a mosquito net over the cot, a clean dry nappy area, and milk that keeps coming even through diarrhoea. And one rule sits above everything: any fever in a baby under 3 months means a doctor now, not tomorrow.

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Heat or damp? New parents in July often can’t tell why their baby is suddenly fussy, rashy and waking every hour. Usually both. The air is thick, washing hangs on the line for two days without drying, mosquitoes come in through every gap in the window, and the water from the tap is shakier than it is in any other month of the year. Babies feel all of it. They can’t tell you. So here’s what actually matters, by age, and what doesn’t.

Why babies struggle more in barsaat

A baby’s skin is thinner than yours, their small body loses water far faster through sweat and loose stools, and their defences against germs are still at school, learning. Now put that in a hot, humid, mosquito-heavy season and three problems stand out: rashes (heat rash, nappy rash, fungal rash in skin folds), mosquito-borne illness like dengue and malaria, and diarrhoea from germs in water and on hands. None of them needs panic. All need a plan.

Mosquito protection by age

Mosquito bites aren’t just itchy. They carry dengue and malaria, and the dengue mosquito bites in the daytime too, which is when babies nap.

• Under 2 months: rely on a net over the cot, pram or car seat, and on clothes. Don’t put repellent on the skin; check the product label, which gives the youngest age allowed.
• 2 months to 3 years: nets for every sleep, light long sleeves and trousers, and a baby-suitable repellent only if the label permits it for that age. Apply it to your own hands first, then to the baby’s exposed skin, avoiding hands, eyes and mouth.
• Over 3: the same, with more repellent options by label. Our guide to repellent strength, coils and netting goes through them.

Coils and vaporiser mats stay out of the baby’s room. Small lungs. Empty standing water in flower pots, air-cooler trays, buckets and old tyres around the house every single week, because the dengue mosquito lays its eggs in exactly that kind of small, clean-looking puddle and a week is all the larvae need. Tip it out. And the cot itself stays flat and bare, baby on their back, no pillow or wedge, net draped over the top and tucked around the mattress, never touching the face.

Nappy rash and fungal rash in humid weather

A wet nappy in damp air stays wet, and the skin underneath softens, rubs against the padding every time the baby kicks, and turns an angry pink by evening. Ordinary nappy rash. If the redness is bright, sits in the creases and has little red dots scattered around the edges, it may be a yeast (thrush) rash, which likes the same warm, damp spots.

1. Change the nappy as soon as it’s wet or dirty, and check every 2 to 3 hours in the day.
2. Clean with plain water on cotton wool or a soft cloth. Skip scented wipes on sore skin.
3. Pat dry and leave the nappy off for 10 to 15 minutes on a towel, several times a day.
4. Spread a thick layer of zinc oxide or petroleum barrier cream at every change, like icing a cake.
5. If it isn’t better in 3 days, is bright red in the folds, or has blisters or pus, see a doctor.

More detail on barrier creams and thrush is in our guide to nappy rash and baby skin. Neck folds, armpits and thighs get the same care: wash, dry well, light cotton clothes. Avoid talc near the face, and never put lemon, turmeric packs or whitening ubtan on a baby’s skin.

Diarrhoea in babies: keep feeding

This is the part parents most often get wrong, and they get it wrong out of love, because the old instinct says a sick tummy needs rest and an empty stomach. So they stop the milk. Don’t. Breast milk is exactly what a baby with diarrhoea needs, since it replaces the water and salts pouring out with every loose motion and keeps feeding the gut lining while it recovers, which no bottle of plain water or homemade drink can match.

• Under 6 months: breastfeed more often, or keep formula at the normal strength. Don’t dilute it, and don’t add water, sugar water, gripe water or ghutti. Call a doctor early; young babies dry out fast.
• 6 to 12 months: keep milk going, carry on with soft foods, and give ORS in small, frequent sips as the doctor advises. A pharmacy sachet is best; the WHO home mix is 1 litre of clean water, 6 level teaspoons of sugar and half a level teaspoon of salt. No salt, sugar or honey in the food itself before age 1.
• 1 to 3 years and beyond: ORS after each loose motion, plus normal meals as appetite allows. Doctors often add zinc for children with diarrhoea; how much and for how long is for the doctor or pharmacist to say.

Boil drinking water for any baby over 6 months. Sterilise bottles. And wash your hands with soap after each nappy change and before every feed, even the 3 a.m. one when you can barely see the tap. Anything for the baby’s tummy beyond milk and ORS, including gripe water and ghutti, is covered in newborn gas, colic and gripe water.

Fever in a baby: the age lines that matter

In barsaat, a fever might be a cold. Or it might be dengue, malaria, a urine infection or something that needs a proper check. Age changes everything.

• Under 3 months: a temperature of 38 °C or more means a doctor or hospital now, even if the baby looks fine.
• 3 to 6 months: see a doctor the same day.
• Over 6 months: see a doctor for 39 °C or more with the child unwell, fever over 3 days, or any warning sign below.

For comfort, paracetamol is the fever medicine to use in dengue season; no ibuprofen or aspirin, and aspirin never under 16 anyway. The amount is worked out from the child’s weight on the pack or by a pharmacist, and you shouldn’t combine syrups that contain the same medicine. Don’t use camphor, Vicks, menthol or balms on a baby’s chest or nose.

Our Barsaat and Flood Season section has more on safe water, food and mosquito control for the whole family.

What parents ask about babies in the rainy season