Viral syndromes are illnesses caused by viruses that often present with a range of symptoms, including fever, fatigue, and body aches. These syndromes can affect various parts of the body and may lead to respiratory, gastrointestinal, or neurological issues. Common examples include the flu and the common cold, both of which are caused by different types of viruses. Diagnosis of viral syndromes typically involves evaluating symptoms and may include laboratory tests to identify the specific virus. Treatment usually focuses on relieving symptoms, as most viral infections resolve on their own. Vaccines, such as those for influenza and COVID-19, can help prevent certain viral syndromes.