Fever Explained – What It Means and How to Deal With It

If your temperature spikes, the first thought is usually “I’m sick.” But a fever is just your body’s way of fighting something off. It isn’t always dangerous, and many times you can handle it at home.

How to Tell If You Really Have a Fever

A normal adult temperature sits around 97.8°F‑99°F (36.5°C‑37.2°C). Anything above 100.4°F (38°C) counts as a fever. The best way to know is with a digital thermometer—oral, ear or forehead work fine. Make sure you follow the instructions; a quick swipe under the tongue can give a false low reading.

Kids are trickier because they sweat a lot. For toddlers, an ear or rectal read gives the most reliable number. Remember, temperature can wobble a few degrees during the day, so check twice if you’re unsure.

Common Causes of Fever

Viruses top the list—think colds, flu, COVID‑19. Bacterial infections like strep throat or urinary tract issues also raise your heat. Sometimes non‑infectious things do it: a reaction to medication, an autoimmune flare, or even intense exercise.

If you’ve started a new prescription, check the side‑effects list for “fever.” Many over‑the‑counter pain relievers (acetaminophen, ibuprofen) can actually bring the temperature down, which is why they’re often recommended for short‑term relief.

Simple Home Care Tips

Stay hydrated—water, broth, or an electrolyte drink replaces fluids you lose through sweating. Dress in light clothing and keep your room at a comfortable 68°F‑72°F (20°C‑22°C). A lukewarm sponge bath can help lower the heat without shocking your system.

If you’re over 18 and feel uncomfortable, a dose of acetaminophen or ibuprofen usually eases both fever and aches. Follow the label for dosage; more isn’t better.

When a Fever Needs Medical Attention

Infants under three months with any fever should see a doctor right away—tiny bodies can’t regulate temperature well. For older kids, look for red flags: fever over 104°F (40°C), lasting more than three days, or accompanied by stiff neck, severe headache, rash, confusion, or difficulty breathing.

Adults with chronic conditions (heart disease, lung problems) should be extra careful. If you have a weakened immune system and the fever sticks around, call your healthcare provider.

This tag also contains articles about medicines that can lower fever, antibiotics for bacterial infections, and tips on managing side‑effects. Browse those posts if you want deeper info on specific drugs or treatment plans.

Bottom line: a mild fever is often just a sign your body’s fighting back. Keep track of the temperature, stay hydrated, and know the warning signs that call for professional help.