Symptom guide
Fever
Raised body temperature, often with chills or aches.
Take note: Pay close attention to warning signs and seek prompt in-person care if they are present.
About this symptom
A fever is usually your body’s response to an infection. Many mild fevers improve with rest and fluids, but the cause and your overall condition matter.
Common causes
- Viral infections such as a cold or flu
- Bacterial infections
- Heat exhaustion or dehydration
- Some inflammatory conditions
Gentle self-care
- Rest and drink water or clear fluids regularly.
- Wear light, comfortable clothing and keep the room comfortably cool.
- Track your temperature and any new symptoms.
When to seek medical care
- Fever with trouble breathing, confusion, severe headache, stiff neck, seizure, or a new rash.
- A fever that is very high, persistent, or worsening.
- Any fever in a baby under 3 months should be assessed urgently.