Post-Viral Fatigue
Prolonged fatigue and weakness after recovering from a viral infection.
Common Symptoms
- Persistent fatigue after viral illness
- Weakness
- Brain fog
- Sleep disturbances
- Muscle aches
- Headaches
- Difficulty concentrating
- Symptoms may fluctuate
- Fatigue worsens with activity
Possible Causes
- Recent viral infection (flu, COVID-19, EBV)
- Immune system still recovering
- Inflammation
- Sleep disruption during illness
- Deconditioning from bed rest
- Stress on body from fighting infection
Note: These are potential causes. A healthcare provider can help determine the specific cause in your case.
Quick Self-Care Tips
- 1Rest but don't overdo bed rest
- 2Return to activities gradually
- 3Pace yourself carefully
- 4Prioritize sleep
- 5Stay hydrated and eat well
- 6Be patient - recovery takes time
- 7Don't push through exhaustion
- 8Keep a symptom diary
Disclaimer: These are general wellness suggestions, not medical treatment recommendations. They may help manage symptoms but should not replace professional medical care.
When to See a Doctor
Consult a healthcare provider if you experience any of the following:
- Fatigue lasts more than 4 weeks
- Symptoms are severe
- You can't do normal activities
- You develop new symptoms
- Fatigue worsens instead of improving
Talk to a Healthcare Provider
If your symptoms are persistent, severe, or concerning, please consult with a qualified healthcare professional for proper evaluation and personalized advice.
Related Conditions
Chronic Fatigue
Persistent tiredness that doesn't improve with rest and affects daily activities.
ME/CFS (Chronic Fatigue Syndrome)
A complex, long-term illness causing extreme fatigue that worsens after physical or mental effort.
Influenza (Flu)
A contagious respiratory illness caused by influenza viruses.
Long COVID (Post-COVID Syndrome)
Persistent symptoms lasting weeks or months after initial COVID-19 infection.
Was this information helpful?
Your feedback is anonymous and helps us improve our content.
Medical Disclaimer
The information on this page is for educational purposes only and is not intended as medical advice. It should not be used for self-diagnosis or self-treatment. Always seek the guidance of a qualified healthcare professional with any questions you have regarding a medical condition. If you are experiencing a medical emergency, call your local emergency services immediately.
Information last reviewed: January 2026
This page provides educational information only. It is not medical advice.