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A viral infection can refer to one of many different conditions. They all have something in common: a virus causes them. Some of the most common viruses include the influenza virus and cold virus, which infect millions of people annually. Viral infections can affect different parts of the body. For this reason, symptoms can vary tremendously and can range from mild to life-threatening. Some of the most common symptoms include digestive and respiratory symptom issues.

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1. Fever

Developing a fever is often the most common symptom of a viral infection. A fever is the body's natural way of responding to a virus: by heating up, it attempts to destroy the infection as well as the virus that caused it. In most cases, fevers are mild to moderate and don't need extra treatment besides pain medication and bed rest. If a fever becomes serious, medical attention may be necessary. A persistent high fever or a fever that doesn't go away after a few days are signs that the infection may be more serious.

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This site offers information designed for educational purposes only. You should not rely on any information on this site as a substitute for professional medical advice, diagnosis, treatment, or as a substitute for, professional counseling care, advice, diagnosis, or treatment. If you have any concerns or questions about your health, you should always consult with a physician or other health-care professional.