Monsoon Fevers in Hyderabad: Dengue, Typhoid, or Viral — How I Tell the Difference

By Dr. Md. Mudassir Ali — Consultant Physician & Diabetologist, Faith Hospital, Hyderabad

Why Fevers Spike Every Monsoon

Every year, from roughly June to October, my clinic at Faith Hospital fills with the same complaint: "Doctor, high fever since two days, body pains, no relief with Crocin." The monsoon transforms Hyderabad into an ideal breeding ground for the three big fever-makers:

• Stagnant water in tanks, tyres, construction sites and drains → dengue (Aedes mosquito)
• Contaminated drinking water from mixed pipelines and flooded borewells → typhoid and gastroenteritis
• Crowding and sudden temperature swings → the whole family of ordinary viral fevers, flu, and sniffles

These illnesses can look identical in the first two or three days — high fever, body aches, headache, weakness. But they behave very differently after that, and telling them apart early is what prevents the serious outcomes.

Warning Signs: Come to the Hospital Immediately

Most fevers settle in 3–5 days with fluids, rest, and paracetamol. But certain signs mean the illness has crossed into dangerous territory. Do not wait these out — come in the same day:

Dengue red flags (usually days 3–6, when fever is falling):

• Severe abdominal pain or persistent vomiting
• Bleeding — gums, nose, black stools, heavy periods, red spots on skin
• Extreme restlessness, cold clammy hands and feet
• Not passing urine for 6–8 hours
• Feeling dramatically worse just as the fever comes down — this is the paradox of dengue: the fall of fever, not its height, is the danger window.

Typhoid red flags:

• Fever persisting beyond 4–5 days without settling, especially in a step-ladder pattern
• Severe abdominal pain, distension, or constipation/diarrhoea beyond a week
• Extreme weakness and confusion — untreated typhoid can cause intestinal perforation

In any fever: breathlessness, chest pain, seizures, persistent vomiting, or a fever above 103°F not responding to paracetamol.

A note on platelets: every monsoon I get calls asking, "Doctor, what's my platelet count?" — platelets do fall in dengue, but the genuinely dangerous problem in dengue is plasma leakage, not the platelet number itself. That is why hydration status, urine output, and blood pressure matter as much as the count. You don't need panic transfusions; you need close monitoring — which is exactly what we do.

Why Self-Medicating with Antibiotics Is Harmful

I say this every monsoon and I will keep saying it: antibiotics do not treat dengue or viral fevers. These are viral illnesses; antibiotics kill bacteria only. Yet the most common thing patients do before reaching me is start a course of azithromycin or ofloxacin "just in case" — often left over from a previous prescription.

Here is why this backfires:

• It delays the real diagnosis. Symptoms get partially suppressed, and by the time proper tests are done, results become harder to interpret.
• It damages your gut. Antibiotics wipe out healthy gut bacteria, causing loose motions and secondary infections — common monsoon problems made worse.
• It breeds resistance. Typhoid in India is already increasingly drug-resistant. Every unnecessary course makes the typhoid of tomorrow harder to treat.
• Painkillers like combiflam/ibuprofen/aspirin are risky in dengue — they increase bleeding tendency and can harm kidneys in a dehydrated patient. Paracetamol is the safe choice for fever; avoid the rest unless a doctor advises them.

What Tests Are Actually Needed — and Which Are Not

After 3 days of continuous fever, I usually advise:

Tests that genuinely help:

• CBC (complete blood count) — the falling platelet and rising haematocrit pattern helps track dengue
• Dengue NS1 antigen (days 1–5 of fever) and/or IgM/IgG (after day 5)
• Widal test for typhoid — only meaningful after 5–7 days of fever; a Widal done on day 2 misleads more than it informs
• Urine test and blood culture in selected patients with prolonged fever
• CRP to help separate bacterial from viral illness in unclear cases

Tests that are usually not needed:

• Repeated platelet counts every few hours when the patient is stable and improving
• A "full body profile" or ultrasound on day 1 of a simple fever
• Widal on day 1–2 (nearly useless that early)
• Malaria smear only if there are chills with rigors, travel history, or specific risk — not by default in every fever

More testing is not better medicine. The right test at the right day is.

Prevention: Water Safety, Mosquito Control, Vaccination Basics

Against dengue (daytime-biting mosquito):

• Empty and scrub water coolers, flower pots, and containers weekly — Aedes breeds in clean, stagnant water
• Use mosquito repellent during daytime, not just evenings — dengue mosquitoes bite in the morning and late afternoon
• Full-sleeve clothing for children and the elderly during peak season
• No vaccine is currently in widespread use for dengue in India — prevention is the only tool

Against typhoid and waterborne illness:

• Drink boiled or filtered water — boil for 10 minutes at rolling boil; during pipeline mixing season, don't trust the filter alone
• Avoid cut fruit, chutneys, and street juices during monsoon; wash produce well
• Typhoid conjugate vaccine is available and effective — a single dose, worth discussing for children and frequent travellers
• Hand hygiene before every meal

For the whole family: flu vaccination before every monsoon/winter, especially for diabetics, elderly, and those with chest conditions — which is a large share of our patients at Faith Hospital.

Closing

Monsoon fevers are inevitable; monsoon complications are not. The formula is simple: paracetamol and fluids for the first 48 hours, close watch for red flags, no self-prescribed antibiotics, and the right test at the right time.

If a fever in your home crosses three days, or any of the warning signs above appear, come to Faith Hospital — we're available 24/7. We'll find the cause, treat what's needed, and reassure you about what isn't.

Disclaimer: This article is for general awareness and is not a substitute for a personal medical consultation.