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What are the symptoms of the flu?

The flu, also known as influenza, is a highly contagious viral infection that primarily affects the respiratory system. It is characterized by a sudden onset of symptoms that can range from mild to severe. Understanding the symptoms of the flu is crucial for early detection and appropriate management of the illness.

1. Fever

One of the hallmark symptoms of the flu is a high fever. It typically presents suddenly and can reach temperatures of 100°F (38°C) or higher. Fever is often accompanied by chills and sweating.

2. Cough

A persistent cough is another common symptom of the flu. It can be dry or productive, meaning it may produce phlegm or mucus. The cough can be quite severe and may last for several weeks.

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3. Sore Throat

Many individuals with the flu experience a sore throat, which can range from mild discomfort to severe pain. Swallowing may become difficult, and the throat may appear red and inflamed.

4. Fatigue

Feeling extremely tired and lacking energy is a typical symptom of the flu. Fatigue can be overwhelming and may persist for several weeks, even after other symptoms have resolved.

5. Body Aches

Muscle and joint pain are common during a flu infection. These aches can be widespread and may be accompanied by headaches. Moving or exerting oneself may exacerbate the discomfort.

6. Headache

Headaches are a frequent complaint among individuals with the flu. They can range from mild to severe and may be accompanied by sensitivity to light and sound.

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7. Nasal Congestion

Many people with the flu experience nasal congestion, which can cause a stuffy or runny nose. This symptom can make breathing difficult and may lead to sinus pressure and discomfort.

8. Nausea and Vomiting

In some cases, the flu can cause gastrointestinal symptoms such as nausea and vomiting. These symptoms are more common in children than in adults.

9. Diarrhea

Similar to nausea and vomiting, diarrhea can also occur as a symptom of the flu. It is more commonly seen in children but can affect individuals of any age.

If you experience any combination of these symptoms, especially during flu season, it is important to seek medical attention. Early diagnosis and treatment can help alleviate symptoms, prevent complications, and reduce the spread of the virus to others.

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