What is the flu?
The flu is a common viral illness that affects your nose, throat, and lungs. It spreads easily from person to person, especially during colder months. Symptoms often come on quickly and can make you feel very sick.
While many people recover at home, the flu can sometimes lead to serious complications, especially for those at higher risk.
The flu is caused by influenza viruses. These viruses spread through droplets when someone coughs, sneezes, or talks. You can also get sick by touching a contaminated surface and then touching your face.
Certain groups are more likely to develop complications, including older adults, young children, pregnant individuals, and people with chronic health conditions.
Symptoms
The flu affects the whole body, not just the respiratory system. Symptoms often appear suddenly and may include:
- Fever or chills
- Persistent cough
- Sore throat
- Runny or stuffy nose
- Muscle aches or body pain
- Headache
- Extreme tiredness
- Occasional nausea, vomiting, or diarrhea
How is it diagnosed?
Healthcare providers often diagnose the flu based on your symptoms and how quickly they started. During flu season, testing may not always be needed.
In some cases, especially if symptoms are severe or unclear, your provider may use a rapid flu test or lab test to confirm the diagnosis.
How is it treated?
Most people can manage the flu at home with supportive care. Early treatment can help reduce how long symptoms last.
Common treatments include:
- Rest and increased fluid intake
- Over-the-counter medications to reduce fever and relieve aches
- Antiviral medications (especially helpful when started early or for high-risk patients)
More serious cases may require hospital care, especially if breathing becomes difficult or complications develop.
Recovery usually takes about a week, but fatigue and coughing can last longer. It’s important to listen to your body and allow time to recover fully.
