Most fevers are short and self-limiting. When one persists beyond about a week — or keeps returning — it stops being a "wait and watch" situation and becomes a diagnostic question. The causes range from lingering infections (typhoid, urinary, chest, abscesses, tuberculosis) to non-infectious causes, and getting the right answer means testing in a logical order rather than treating blindly. Start with a fever and infection assessment.
Continuous, spiking or relapsing fevers each point in different directions.
Weight loss, sweats, cough, urinary or abdominal symptoms help guide the search.
Previous antibiotics and tests shape the sensible next step.
A prolonged fever has many possible causes — these are common categories, narrowed down by history and testing.
| Category | Examples | Typical clues |
|---|---|---|
| Lingering infection | Typhoid, urinary infection, chest infection, abscess | Localising symptoms, raised counts |
| Mosquito-borne | Dengue, malaria, chikungunya (or overlap) | Recent onset, seasonal, body or joint pain |
| Chronic infection | Tuberculosis and others | Weeks of low-grade fever, weight loss, sweats |
| Non-infectious | Inflammatory and other causes | When infection screens are negative |
This is why Dr. Manuj evaluates a prolonged fever alongside typhoid, dengue, malaria, chikungunya and urinary infections — testing in sequence rather than all at once.
Rather than ordering everything at once, assessment is staged: a focused history and examination point to the likely group, then targeted tests (blood counts and cultures, urine, imaging, and specific tests where indicated) confirm or exclude. This avoids both under-testing and a scattergun of unnecessary investigations.
Treatment follows the diagnosis — the right antibiotic for a confirmed bacterial infection, supportive care for a viral illness, or onward management where a non-infectious cause is found. Layering antibiotics onto an undiagnosed fever is what we specifically avoid, because it muddies the picture and drives resistance.
Admission is considered for a high fever that will not settle with significant weakness or dehydration, confusion or neck stiffness, breathlessness, or suspected serious infection — and more readily in older adults, pregnancy, or with diabetes, kidney or immune problems. Otherwise much of the workup can be done as an outpatient with close review.
A prolonged fever is precisely where a consultant physician in Greater Noida adds value — connecting the symptoms, ordering tests rationally, and recognising the point where escalation is needed. It is managed within a broader fever and infection assessment; complex or recurrent cases are also seen as an infectious disease physician.
Fever is not treated blindly with random antibiotics. The aim is to identify the likely cause, test in a logical sequence, treat when indicated, and review the response — which matters most when a fever has already lasted longer than it should.
Bringing a simple record helps: when the fever started, its daily pattern, any associated symptoms (cough, urinary, abdominal, joint), recent travel, and a list of medicines and tests already done. This lets the workup start from the right place rather than repeating steps.
"I took treatment from Dr. Manuj Sondhi for fever and typhoid and got better within a few days. He did not prescribe any useless medications or investigations, and explained everything in detail."
"Dr. Manuj Sondhi is indeed an infectious diseases expert. My 70-year-old father, a spinal TB patient, could not tolerate his first-line treatment. Dr. Sondhi assessed his case personally and modified the treatment to a level my father could tolerate."
Genuine reviews from Nirvana Clinic's Google profile; patient names withheld for privacy.
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This page is general information, not a substitute for in-person medical advice.