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What are the Symptoms of Flu?

In adults, common flu symptoms include:

  • A temperature of 38°C or higher

  • Chills

  • Sore throat

  • Achy muscles, often in your arms, legs, neck, back and shoulders

  • Tiredness

  • Cough

  • Blocked nose, or a runny nose

  • Sneezing

  • Headache

  • No appetite

  • Wheezing when you breathe

Flu symptoms in children and babies

In children, the symptoms are the same as in adults, as listed above, but you should also look out for:

If your baby or child is showing severe symptoms, or if you’re worried about them, you should see a GP for more advice.

What’s the difference between a Cold and the Flu?

A cold and the flu are caused by different viruses, but can have similar symptoms, so it can be hard to tell them apart. Flu usually comes on a lot quicker than a cold, which can develop over a few days.

The flu usually has more severe symptoms than a cold too, as listed above. With a cold, you’ll usually only have a runny or blocked nose, a sore throat, sneezing, headaches and sometimes a cough.

The flu can also have serious complications, whereas a cold usually doesn’t have any lasting effects.