Fever for 3+ days — what it could mean and when to see a doctor

When fever that won't go away needs a doctor — soon

• ·Fever above 102°F (39°C) for more than 3 days
• ·Severe headache, neck stiffness, or persistent vomiting
• ·Breathlessness, chest pain, or blue lips/fingertips
• ·Rash, bleeding gums, or dark/red urine (possible dengue)
• ·Reduced urine output, drowsiness, or confusion

This is general guidance, not a diagnosis. If you have any of the above, book a same-day consult or seek urgent care.

Common causes a physician will look for

• ·Dengue, typhoid, malaria, and other tropical infections (very common in Delhi monsoon)
• ·Urinary tract infection — often subtle in older adults
• ·Bacterial pneumonia or atypical chest infection
• ·Post-viral inflammatory fever or COVID-19
• ·Less common: thyroid storm, drug fever, autoimmune flares

What to expect at the consult

A focused history, examination, and a tightly chosen set of tests — typically CBC, NS1/dengue serology, malaria, urine routine, CRP, and a chest screen if indicated. The goal is a clear diagnosis within 24 hours, with treatment started the same day if needed, and clear instructions on when to escalate.

Frequently asked

How many days of fever before I should see a doctor?

Adults with fever lasting more than 72 hours, or fever above 102°F at any point, should see a physician. Don't wait if there are warning signs (breathlessness, severe headache, bleeding, low urine output).

Is it dengue?

In Delhi between July and November, dengue is high on the list for any fever with body ache, headache behind the eyes, and a falling platelet count. NS1 antigen in the first 5 days is the quickest confirmatory test.

Can I get a same-day appointment for fever?

Yes — same-day slots are usually kept open for acute illness. WhatsApp +91 98110 78388 in the morning.