Fever for Three Days or More in Vasant Kunj: Is It Dengue, Viral or Typhoid?

The short answer

See a doctor if a fever lasts more than three days, or sooner if there is severe headache, pain behind the eyes, body ache, rash, vomiting or abdominal pain.

Which dengue test depends on the day of your fever. In the first five days, the NS1 antigen test is the right one — it is most accurate in days one to three. From day five onwards, NS1 often turns negative and the IgM antibody test becomes more useful. If you are unsure which day you are on, an NS1 + IgM combination gives the widest coverage. A complete blood count (CBC) is ordered alongside, and usually repeated.

Do not take anti-inflammatory painkillers, or combination painkillers containing them, for a fever that has not been diagnosed. A plain fever medicine only. The others increase bleeding risk if the fever turns out to be dengue.

The most dangerous phase of dengue is not when the fever is highest — it is when the fever falls, usually around days four to seven. Feeling worse as the temperature comes down is a reason to be seen urgently, not a sign of recovery.

Fever consultations at All Is Well Medical Centre, Vasant Kunj — Monday to Saturday, 10 AM to 7 PM. Call 8800844793 or book an appointment. Home sample collection available for blood tests.

Why this matters right now in Delhi

Dengue in Delhi is seasonal, and the season is upon us. Cases build through the monsoon and historically peak across August, September and October. As of mid-2026 the Municipal Corporation of Delhi had recorded case numbers well below the outbreak years — but civic authorities and clinicians have been consistent in warning that the peak arrives later, and that the coming weeks determine how bad a year turns out to be.

For a household in Vasant Kunj, Masoodpur or Munirka, the practical version of that is simple: between August and October, a fever that lasts more than a couple of days deserves a proper look rather than a guess.

When should I see a doctor for a fever?

Most fevers are ordinary viral illnesses that settle in three to five days without anything more than rest, fluids and a plain fever medicine. You do not need a consultation on day one of a mild fever with a runny nose.

See a doctor if any of the following apply.

The fever has lasted more than three days. This is the single most useful rule. Ordinary viral fevers are usually improving by day three or four. One that is still climbing on day four is a different question.

The fever is above 102°F and not settling with a plain fever medicine.

There is severe headache, pain behind the eyes, or intense body and joint ache. The "breakbone" pattern is characteristic of dengue and chikungunya.

A rash has appeared, particularly a flat red rash across the trunk and limbs.

There is vomiting, or you cannot keep fluids down.

There is abdominal pain, especially in the upper right side.

Any bleeding — gums, nose, unusual bruising, blood in vomit or stool, or unusually heavy menstrual bleeding.

The person is very young, elderly, pregnant, or has diabetes, heart disease, kidney disease or is on blood thinners. The threshold for review should be much lower in all of these.

You feel unusually drowsy, restless, faint on standing, or your hands and feet feel cold and clammy. These need to be seen the same day, not the next morning.

Is it dengue, viral fever, typhoid or malaria?

They overlap far more than most people expect, which is exactly why guessing at home is unreliable. Broad patterns, offered as orientation rather than diagnosis:

Ordinary viral fever — comes with sore throat, runny nose, cough. Usually settles in three to five days. Body ache is present but mild.

Dengue — abrupt high fever, severe headache, pain behind the eyes, marked muscle and joint pain, and often a rash appearing around day three to five. Platelet count typically falls in the second half of the illness. Transmitted by Aedes mosquitoes, which bite during daylight hours and breed in clean stored water.

Chikungunya — similar onset to dengue, but joint pain dominates and can persist for weeks or months after the fever has gone. Same mosquito.

Typhoid — fever that climbs in a stepwise pattern over several days rather than spiking abruptly, often with abdominal discomfort, constipation or loose stools, and poor appetite. Waterborne and foodborne rather than mosquito-borne.

Malaria — classically fever with shaking chills and sweating, sometimes in a recurring cycle. Less common in Delhi than dengue, but not absent.

Scrub typhus and leptospirosis also circulate during and after the monsoon and can look almost identical in the first few days.

A clinician distinguishes between these through the history, the examination and targeted tests. A search engine cannot, and neither can a neighbour.

When should I get a dengue test, and which one?

This is the question that most often gets answered wrongly, and testing on the wrong day is the commonest reason a dengue test comes back falsely negative.

Days 1 to 5 of fever — NS1 antigen. NS1 is a viral protein detectable from the first day of fever. It is at its most reliable in days one to three and usually starts disappearing after day five. ELISA-based NS1 is more reliable than a rapid card test.

Day 5 onwards — IgM antibody. Your body takes four to five days to produce IgM antibodies against dengue. Testing for IgM on day two is pointless — the antibodies simply are not there yet. From day five they become the more useful marker, and stay detectable for two to three months.

Unsure which day you're on — NS1 + IgM combination. Many people cannot pinpoint when the fever actually began. The combination test covers both windows.

A complete blood count (CBC) accompanies any of these, and is usually repeated every day or two. It shows the platelet count, the white cell count and the haematocrit. In dengue, the haematocrit is arguably the more important of the three — a rising haematocrit alongside a falling platelet count suggests plasma is leaking out of the blood vessels, which is the mechanism behind severe dengue.

One negative test does not close the question. An NS1 taken on day six can be negative in someone who genuinely has dengue. If the clinical picture fits, your doctor may repeat the test on a different day or add IgM.

A note on IgG. IgG indicates past infection. A positive IgG with a negative IgM in a first-time fever usually reflects an old infection, not the current one. It matters because a second dengue infection with a different strain carries a higher risk of severe disease — which is why a previous bout of dengue is worth mentioning to your doctor rather than treating as reassurance.

What does a falling platelet count actually mean?

Probably the most misunderstood number in Indian medicine. Some plain speaking:

A falling platelet count is expected in dengue. It typically drops during days four to seven and then recovers on its own as the illness resolves. A fall is not, by itself, an emergency.

The number alone does not decide treatment. Indian national guidance sets the transfusion trigger at around 10,000 per microlitre, and states that prophylactic platelet transfusion is not required in a stable patient even below 20,000. In dengue without significant bleeding, platelet transfusion is generally not recommended.

Warning signs matter more than the platelet number. A patient at 40,000 with severe abdominal pain and persistent vomiting is in more danger than a comfortable patient at 25,000 who is drinking well and passing urine normally.

Papaya leaf extract, kiwi, and similar remedies. The evidence is weak and inconsistent. They are not harmful in the way that anti-inflammatory painkillers are, but they are not a treatment, and the real risk is that they create a false sense that something is being done while genuine warning signs go unwatched. Monitoring and fluids are what actually change outcomes.

What matters in dengue is careful fluid management, daily monitoring, and recognising deterioration early. Not a number on a report.

When does dengue become dangerous?

Here is the part that is genuinely counterintuitive, and worth reading twice.

Dengue has three phases. A febrile phase of roughly two to seven days. Then a critical phase lasting about 24 to 48 hours, which begins as the fever falls. Then a recovery phase.

The critical phase is when plasma leaks from the blood vessels. It typically starts around days four to seven — just as the temperature comes down and the patient appears to be improving. Families often relax at exactly the moment vigilance matters most.

Seek medical care urgently if any of these appear, whether or not the fever has settled:

• Severe or persistent abdominal pain, or tenderness

• Persistent vomiting — unable to keep fluids down

• Bleeding from gums or nose, blood in vomit, black tarry stools, or heavy menstrual bleeding

• Extreme lethargy, drowsiness, confusion, or unusual restlessness and irritability

• Cold, clammy or mottled skin; a weak rapid pulse; feeling faint on standing

• Not passing urine for six to eight hours

• Difficulty breathing, or swelling of the abdomen

• Sudden weakness at the point the fever breaks

These need a hospital, not a clinic appointment. All Is Well Medical Centre is an outpatient clinic open Monday to Saturday, 10 AM to 7 PM. We can consult, examine, arrange blood tests and monitor an uncomplicated fever — and we will tell you plainly and immediately when someone needs inpatient care, and help arrange it. If warning signs appear at night or on a Sunday, go directly to a hospital emergency department. Do not wait for the clinic to open.

What should I not do?

Do not take anti-inflammatory painkillers, or combination painkillers containing them, for an undiagnosed fever. These NSAIDs affect platelet function and irritate the stomach lining, and in dengue they increase bleeding risk. A plain fever medicine is the appropriate choice, at the dose your doctor advises, with attention to the total daily maximum. Many combination cold and flu preparations already contain the same fever medicine, so people unknowingly double up.

Do not start antibiotics on your own. Dengue, chikungunya and ordinary viral fever are all viral — antibiotics do nothing for them. Typhoid does need antibiotics, but the right one, at the right dose, for the right duration, after a diagnosis. Self-started, half-finished antibiotic courses are a significant driver of drug resistance in India.

Do not skip fluids. Dehydration is a large part of why dengue patients deteriorate. Water, ORS, coconut water, thin dal, rice water, soups. Watch urine output — passing pale urine regularly is a reassuringly practical marker.

Do not stop monitoring because the fever has gone. As above, that is precisely when the critical phase begins.

Do not test on day one and assume the result settles it. Test timing determines test accuracy.

Do not ignore the mosquitoes at home. Aedes breeds in clean water — cooler trays, flowerpot saucers, overhead tanks, discarded containers, terrace clutter. A weekly check of every water-holding container around the house is unglamorous and remains the single most effective preventive measure available.

Fever in children — what's different

Children dehydrate faster than adults and can deteriorate more quickly, and they cannot always describe what they are feeling.

Take a child to a doctor the same day if the child is under three months old with any fever; is unusually drowsy or difficult to wake; is refusing feeds or fluids; has had fewer wet nappies or has not passed urine for six to eight hours; has a rash that does not fade when pressed; has persistent vomiting; is breathing rapidly or with difficulty; or has a seizure.

Never give a child an anti-inflammatory painkiller for a viral fever. Some common painkillers are not safe for children at all — ask before you give anything.

Our paediatrician, Dr. Mannat Verma (MBBS, MD Paediatrics), sees children at the clinic, and paediatric fever doses are weight-based rather than age-based — worth confirming rather than estimating.

Fever consultation and dengue testing in Vasant Kunj

At All Is Well Medical Centre, Central Market, Masoodpur — opposite Vasant Square Mall — a fever consultation covers:

A proper history and examination. Day of fever, pattern, associated symptoms, travel, exposure, existing conditions and current medication. This is what determines which test is worth doing and when.

Testing arranged appropriately to the day of illness — NS1, IgM, CBC, malaria, typhoid or others as indicated, rather than a scattergun panel.

Home sample collection, so an unwell person does not have to travel for a blood test. We work with Tata 1mg, Agilus Diagnostics, Max Lab, Healthians and Metropolis.

Daily monitoring where it is needed, including repeat CBCs to track platelets and haematocrit through the critical window.

Home nursing — IV fluids, injections and dressings at home where appropriate.

Honest escalation. If someone needs hospital admission, we say so at once rather than managing beyond what an outpatient clinic safely can.

Consultations are with our general physicians — Dr. Pratik Banerjee (MBBS, PGCC, Paed IMA, 35 years) and Dr. Sushma Vikirna (MBBS, PGDMCH, MBA Healthcare Administration, 35+ years).

Consultation fee: ₹1,200. Lab test charges depend on the tests ordered — ask at reception or on the phone. Dengue NS1 Antigen test starting from ₹500.

Monday to Saturday, 10 AM to 7 PM. Call 8800844793 or book an appointment online.

Frequently asked questions

How many days of fever before I should get a dengue test? If a fever has lasted more than three days, or if there is severe headache, pain behind the eyes, marked body ache or a rash at any point, get reviewed. Your doctor will choose NS1 or IgM based on which day of fever you are on.

Can a dengue test be negative even if I have dengue? Yes. NS1 taken after day five is often negative despite genuine dengue, and IgM taken before day four or five is usually negative because the antibodies have not yet developed. Test timing matters, and one negative result does not always close the question.

What is a dangerous platelet count in dengue? There is no single number that defines danger. Indian national guidance places the transfusion trigger around 10,000 per microlitre, and does not recommend prophylactic transfusion in a stable patient even below 20,000. Warning signs — abdominal pain, persistent vomiting, bleeding, drowsiness, cold clammy skin — are more urgent than the count itself.

Why do I feel worse after my fever comes down? This is characteristic of dengue. The critical phase, when plasma leaks from the blood vessels, typically begins as the fever falls, around days four to seven. Feeling worse at that point is a reason to be seen urgently.

Can I take a painkiller for fever? A plain fever medicine only — nothing anti-inflammatory, until a doctor has seen you. Anti-inflammatory painkillers affect platelet function and increase bleeding risk if the fever turns out to be dengue. Read the box of anything you already have at home and avoid it if an anti-inflammatory is listed. Also check whether a cold or flu combination you are taking already contains the same fever medicine, so you don't double up without realising. If you are not sure what a tablet is, bring the strip with you, or call 8800844793 before you take anything.

Does papaya leaf juice raise platelets? The evidence is weak and inconsistent. It is not a substitute for fluids, monitoring and medical review, and relying on it can delay recognition of genuine warning signs.

Do you offer home blood sample collection in Vasant Kunj? Yes. Home sample collection is available across Vasant Kunj, Masoodpur, Munirka, Vasant Vihar and nearby areas, through our partner laboratories.

Is dengue contagious from person to person? No. Dengue spreads only through the bite of an infected Aedes mosquito, not from person to person. However, a mosquito that bites an infected person can go on to infect others in the same household — which is why mosquito control matters most when someone at home already has dengue.

What if someone develops warning signs at night or on Sunday? Go directly to a hospital emergency department. The clinic is open Monday to Saturday, 10 AM to 7 PM, and severe dengue needs inpatient care.

Medically reviewed by Dr. Pratik Banerjee, MBBS, PGCC, Paed (IMA), Family General Physician, All Is Well Medical Centre, Vasant Kunj. Last updated 5 September, 2026.

This article is general health information, not a diagnosis or a prescription. Fever has many causes and they cannot be distinguished reliably without examination. If you or someone at home is unwell, please consult a doctor.

Contact

Call 8800844793. Home visits 6 am to midnight.

Phone

8800844793

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Shop no. 1, Central Market, Sector B Rd, opposite Vasant Square Mall, Masoodpur, Sector B, Vasant Kunj, New Delhi, Delhi 110070

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All is well medical centre

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