Most people associate the flu with a high fever. Fever is one of the symptoms of the influenza virus. However, it’s possible to have the flu without ever running a temperature, especially in mild cases.
What Flu Symptoms Look Like
When the body detects a virus like influenza, it often raises its internal temperature to fight off the infection. That’s a fever. But not everyone responds the same way. Some people, particularly those with mild cases might not spike a fever at all, even if they’re sick.
Flu symptoms tend to come on suddenly and hit hard. Whether or not there’s a fever, people with the flu may experience fatigue, body aches, headaches, a sore throat, and a persistent cough. Children might also have nausea, vomiting, or diarrhea.
Flu vs. Cold: How to Tell the Difference
The flu and the common cold are both viral infections that affect the respiratory system, and they can initially look similar. However, flu symptoms usually appear faster and are more intense. Fever is common with the flu but rare with a cold. Plus, the flu is more likely to lead to complications, especially in people with weaker immune systems.
Treating the Flu at Home
Healthy people can generally recover from the flu by resting and staying hydrated. Clear fluids like water, broth, or herbal tea are helpful. In more serious cases or for those at higher risk doctors may prescribe antiviral medications, which work best if taken within the first day or two of symptoms. Since fever is a symptom of the flu, try using an easy-to-use, accurate thermometer like the Exergen Temporal Artery Thermometer to ensure that temperature measurements are reliable and precise.
When to Call the Doctor
You don’t always need to see a doctor for the flu, but if symptoms are severe or unusual, it’s worth reaching out. Difficulty breathing, chest pain, confusion, or vomiting are signs you should get checked out. Kids with high irritability, a rash with fever, or trouble staying hydrated should also see a healthcare provider.
The Bottom Line
So yes, you can have the flu without a fever. Even without it, other symptoms can still make you feel pretty miserable. The best approach? Rest up, drink plenty of fluids, and see a doctor if things get worse or don’t start to improve.
Source
- Medical News Today: https://www.medicalnewstoday.com/articles/324400
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