Not sure if your sudden fever is from the flu or another virus? Learn the symptoms, differences, and when to visit AFC Farragut.
If a fever comes on suddenly after a weekend of activities or time spent around others in the Farragut area, it may be hard to know what’s causing it. Understanding the difference between flu and other viruses can guide next steps.
At AFC Farragut, we focus on family-centered care and clear guidance to help patients feel supported.
Why the Flu and Other Viruses Can Feel Similar
Many viral illnesses share overlapping symptoms, including:
- Fever or chills
- Fatigue
- Headache
- Sore throat
- Cough or congestion
However, the flu (influenza) often causes symptoms that appear suddenly and feel more intense, such as:
- High fever
- Significant body aches
- Extreme fatigue
- Headache
Other common viral infections, like colds or non-influenza respiratory viruses, may develop more gradually and cause milder symptoms. While both can make you feel miserable, knowing the difference helps guide care and recovery.
Signs Your Fever May Be From the Flu
Your fever may be more likely caused by the flu if you experience:
- A rapid onset of symptoms
- Fever over 100.4°F
- Severe muscle or body aches
- Extreme tiredness
- Worsening symptoms within the first 24–48 hours
Flu symptoms tend to hit hard and fast, especially during peak flu season.
Signs Your Fever May Be From Another Virus
Your symptoms may be caused by another viral illness if you notice:
- Gradual symptom onset
- Mild to moderate fever
- Runny or stuffy nose
- Sore throat without severe body aches
- Symptoms improving after a few days
While these viruses are usually less severe, some may still require medical evaluation, especially for children, older adults, or those with chronic conditions.
When to Visit Urgent Care
You should consider visiting AFC Farragut if:
- Your fever is high or persistent
- Symptoms worsen or do not improve after a few days
- You feel extremely fatigued or dehydrated
- You have underlying health conditions
- You want flu testing or antiviral treatment
Prompt evaluation can help determine whether testing or treatment is needed.
Tips for a Smoother Visit
- Check in online to reduce wait times
- Bring a list of symptoms and when they started
- Have insurance information and medications ready
- Wear a mask if you have a fever or respiratory symptoms
How AFC Farragut Helps Diagnose Sudden Fevers
At AFC Farragut, we provide walk-in care for a wide range of viral illnesses and offer on-site testing when appropriate. Patients can expect flu testing with fast results, walk-in availability with extended hours, and providers experienced in diagnosing viral illnesses who deliver clear treatment guidance and next steps in a clean, welcoming environment. Whether your fever is from the flu or another virus, our team is here to help you recover safely and comfortably.
Getting Answers Starts With the Right Care
No one wants to feel uncertain about their health when symptoms appear suddenly. By recognizing warning signs and seeking timely care, you can get answers and peace of mind. AFC Farragut provides expert, patient-centered care to help you understand your symptoms and take the right next steps.
