Viral Fever Symptoms: How Long It Lasts and When to Get Tested

What is viral fever?

"Viral fever" isn't one disease. It's the everyday name for a fever caused by any of several viruses: flu, common cold viruses, adenovirus and others.

Viral fever symptoms in adults

• Body ache and joint pain
• Headache
• Sore throat, runny or blocked nose, cough
• Low appetite, sometimes nausea or loose motions
• Burning eyes

Viral fever symptoms in kids

Get urgent medical help if a child:

• Is under 3 months old with any fever
• Is very drowsy, hard to wake or floppy
• Is breathing fast or with effort

How long does viral fever last?

Most viral fevers settle within 3 to 5 days. Some, like flu, can take up to a week.

Viral fever vs dengue vs typhoid vs malaria

In the first day or two, these can look identical.

Warning signs: see a doctor the same day

• Fever lasting more than 3 days, or rising each day
• Severe stomach pain or repeated vomiting
• Breathlessness, chest pain or confusion

Viral fever treatment at home

• Rest.
• Drink more than you think you need.
• Paracetamol for fever and pain.
• Avoid ibuprofen and aspirin until dengue is ruled out.

During viral fever, what to eat

Appetite drops, and that's fine for a day or two.

How to avoid catching it

• Wash hands with soap before eating and after coming home.
• Keep sick family members' towels and glasses separate.
• Drink boiled or filtered water.