Monsoon illnesses in Bengaluru: common ones and prevention

The first proper rains have arrived, and with them comes a season every Bengaluru household knows well. Roads flood, the air turns cool and damp, and within a week or two clinics fill up with fevers, stomach upsets and stubborn coughs. None of this is a surprise — the same handful of illnesses return every monsoon. This guide is meant to help you recognise them early, know what you can watch at home, and know exactly when something needs a doctor.

It is written for families in Bengaluru by an MBBS-qualified doctor with a postgraduate degree in community medicine. It is general guidance, not a treatment plan — but it should help you make calmer decisions when someone at home is unwell.

The illnesses that come with the rain

Most monsoon illness in our city falls into five groups. Knowing which one you are likely dealing with helps you respond sensibly.

• Mosquito-borne fevers — dengue and chikungunya. Standing water in pots, tyres, tanks and clogged drains becomes a breeding ground for the Aedes mosquito, which bites by day. Dengue brings high fever, severe body and joint ache, pain behind the eyes, and sometimes a rash. Chikungunya brings fever with intense joint pain that can linger for weeks. Both are common across the city from June onwards.
• Viral fevers. The ordinary seasonal fever — fever, headache, sore throat, body ache, runny nose — spreads quickly when people are indoors and damp. Most settle in three to five days with rest.
• Stomach and waterborne illness. Contaminated water and food cause vomiting, loose motions and stomach cramps. Typhoid, jaundice (hepatitis A) and ordinary gastroenteritis all rise in the monsoon, especially where drinking water mixes with floodwater.
• Respiratory infections. Cold, damp air and crowding indoors bring coughs, colds, throat infections, and flare-ups of asthma and other long-term lung conditions.
• Fungal skin problems. Constant moisture — wet clothes, damp shoes, sweat that never quite dries — leads to ringworm, itching between the toes, and rashes in skin folds. Uncomfortable, common, and very treatable.

Red flags — call 108 or go to hospital now

Most monsoon illness is mild. But some signs mean the situation is no longer one to watch at home. If any of these appear, do not wait for morning and do not book a home visit — call 108 or go to the nearest hospital straight away:

• Bleeding of any kind — bleeding gums, nosebleeds, blood in vomit or stool, or tiny red spots under the skin (a possible danger sign in dengue)
• A fever that suddenly settles while the person looks more unwell, not better — in dengue this can be the most dangerous phase, and it needs hospital care
• Severe, constant stomach pain, or repeated vomiting that will not stop
• Difficulty breathing, fast breathing, or blue-tinged lips
• Cold, clammy or mottled hands and feet, or a child who has gone pale and floppy
• Drowsiness, confusion, or being very difficult to wake
• A seizure (fit), or a stiff neck with fever and dislike of bright light
• No urine for many hours, no tears when crying, or a sunken soft spot in a baby — signs of serious dehydration
• A baby under three months with any fever, or any young baby who is unusually sleepy, floppy, feeding poorly, or hard to wake — do not watch at home, seek medical help the same day

If you are reading this while one of these is happening, please stop and call 108.

When a doctor at home is the right call

Between “rest at home” and “rush to hospital” sits a large, common middle ground — illnesses that need a proper examination and a correct prescription, but where dragging an unwell person to a crowded waiting room only makes things harder. This is exactly where a doctor at home helps. Consider booking a visit when:

• A fever lasts more than 48 hours, or crosses 102–103°F and will not settle with paracetamol (taken as directed) and fluids
• There is fever with severe body ache, pain behind the eyes, or a rash — these warrant testing to rule out dengue
• Loose motions or vomiting continue beyond a day, or the person cannot keep fluids down
• A cough worsens, turns wet, or comes with chest tightness or breathlessness — particularly in someone with asthma or a long-term lung condition
• The unwell person is elderly, pregnant, a young child, a newborn, or has diabetes, heart, kidney or liver disease — they tire and dehydrate faster, and deserve to be seen sooner
• A skin rash is spreading, weeping, or coming with fever

A home-visit doctor can examine properly, arrange a blood test where needed (dengue, typhoid and malaria all need testing to confirm), prescribe correctly, and decide whether hospital care is required — without a tiring outing. You can see how this works on our how it works page, and what we offer families on our for patients page.

When it can safely wait, with watching

Many monsoon illnesses settle on their own. If the unwell person is otherwise stable, eating and drinking, and passing urine normally, it is reasonable to rest and watch for a day or two:

• A first-day fever that comes down with paracetamol, with no other warning sign
• A mild cold, runny nose or sore throat without breathing difficulty
• One or two loose motions, with fluids being kept down
• Mild itching or a small patch of fungal rash

Watching means staying alert. If anything from the red-flag list appears, or if a second day brings a clearly sicker person, that is your signal to get a doctor involved. With very young babies, lean towards being seen sooner rather than watching.

Prevention — the part you can actually control

The good news about monsoon illness is how much of it is preventable. A few habits, kept up through the season, make a real difference.

Stop mosquitoes breeding. Once a week, empty and scrub anything that holds water — flowerpot trays, pet bowls, coolers, buckets, old tyres on the terrace. Cover overhead and ground water tanks. Aedes mosquitoes breed in clean, still water close to home, so the source is usually inside your own compound. Use repellent and screens, and protect children during the day.

Be careful with water and food. Drink boiled or properly filtered water. Wash fruit and vegetables well. Eat freshly cooked, hot food, and be cautious with cut fruit and uncovered street food during heavy rains, when drains overflow.

Stay dry. Change out of wet clothes and shoes quickly. Dry between your toes and in skin folds. Keep bathroom floors clean. This alone prevents most monsoon skin trouble.

Protect the vulnerable. Elderly parents, young children, pregnant women and anyone with diabetes or a long-term illness should be watched more closely — they fall ill faster and recover more slowly. If you care for ageing parents, our guide on when to call a doctor for elderly parents may help you judge these moments.

A note for different parts of the city

Low-lying and fast-growing areas tend to see more waterlogging, which means more mosquitoes and more strain on local drainage. Wherever you are, a doctor can come to you — whether that is a doctor home visit in HSR Layout, a home visit in Whitefield, or Jayanagar. You can find your neighbourhood on our areas we cover page.

This monsoon, most of what comes through your door will be mild and pass with rest and care. Knowing the warning signs is what lets you relax about the rest. If you are in Bengaluru and would like a verified doctor to examine someone at home — with the doctor’s qualifications shown to you before you book — keep our number handy, or reach out to us whenever you are unsure. We hope you stay well through the rains.