Fever is the body's normal response to an infection, and most fevers caused by common viral infections get better on their own within two or three days. In India, though, a fever can also be the first sign of dengue, malaria or typhoid — illnesses where seeing a doctor early makes a real difference.
This guide explains when a fever is fine to watch at home, which signs mean you should see a doctor today, and what to expect at the clinic.
When is a fever usually not serious?
A fever is often a mild viral infection when:
It lasts one to two days and comes down with rest and fluids.
You can eat and drink, pass urine normally and stay awake and alert.
There is no rash, severe pain, bleeding or breathing difficulty.
Rest, drink plenty of fluids (water, ORS, coconut water, dal water) and check your temperature two or three times a day. Write it down — the doctor will find it useful.
When should you see a doctor?
See a doctor — a general physician is the right first stop — if:
The fever lasts more than 2–3 days, or keeps coming back.
The temperature is 103°F (39.4°C) or higher, or doesn't come down at all.
You have chills with shivering, or fever that comes and goes at regular times.
You have body ache so severe you can't get up, pain behind the eyes, or a new rash.
The person is a baby or young child, over 60, pregnant, or has diabetes, heart, kidney or lung disease, or low immunity — see a doctor on the first day.
For children, a paediatrician is best.
Warning signs: get help urgently
Go to a hospital or call 112 now if there is: severe stomach pain, vomiting again and again, bleeding from the gums or nose, black stools or blood in vomit, difficulty breathing, cold and clammy hands and feet, very little urine, drowsiness, confusion, a stiff neck, or a fit (seizure).
In dengue, these signs often appear around the time the fever is going down (days 3–7). That's why "the fever has broken" doesn't always mean the danger has passed.
Dengue, malaria or typhoid? Clues the doctor looks for
Dengue
Spread by the Aedes mosquito, which bites during the day. Typical signs are sudden high fever, severe body and joint pain, headache, pain behind the eyes, nausea and sometimes a rash. Platelets can fall in the following days.
Malaria
Spread by the Anopheles mosquito, which bites at night. Fever often comes with shivering chills and sweating, sometimes in a cycle. Malaria needs a blood test and specific treatment — it should never be guessed.
Typhoid
Spread through contaminated food and water. The fever usually rises slowly over several days, with tiredness, stomach pain, headache and loss of appetite, and sometimes constipation or diarrhoea.
What tests might the doctor order?
The doctor chooses tests based on your symptoms and the day of fever. Common ones are:
Complete blood count (CBC), including platelets.
Dengue NS1 antigen (useful in the first days) or dengue IgM (after about day 4–5).
Malaria rapid test or smear.
Blood culture for typhoid. The Widal test is commonly done but can be misleading on its own, so doctors read it carefully.
Urine tests, liver function or a chest X-ray if needed.
What to do at home meanwhile
Drink fluids regularly — dehydration is a big risk in dengue.
Paracetamol is commonly used for fever; follow the dose on the label or your doctor's advice.
Avoid ibuprofen, aspirin and other painkillers during a possible dengue fever unless a doctor says they are safe — they can raise the risk of bleeding.
Don't take antibiotics on your own. They don't help viral fevers and can hide the cause of a bacterial one.
Sponge with lukewarm (not cold) water if the fever feels very high.
Prevent mosquito bites: nets, repellent, full sleeves, and no stagnant water around the house.
Find a doctor near you
If you're not sure whether to see a doctor, describe your symptoms on Nirogo in Hindi, English or your own language. We'll work out the right kind of doctor, and matching clinics in your city will contact you — free.