What is the difference between the common cold and influenza (the flu)?
Many people confuse the common cold with influenza (the flu). Influenza is caused by the influenza virus, while the common cold generally is not. While some of the symptoms of the common cold and influenza may be similar, patients with the common cold typically have a milder illness. Patients with influenza usually appear more ill and have a more abrupt onset of illness with fever, chills, headache, substantial muscle and body aches, dry cough, and extreme weakness. Though differentiating between the common cold and influenza can be difficult, there is laboratory testing available to confirm the diagnoses of influenza. How is the common cold diagnosed? Your physician or health-care practitioner will generally diagnose the common cold based on the description of your symptoms and the findings on your physical exam. Laboratory testing and imaging studies are generally not necessary unless there are concerns about another underlying medical condition or potential complications. What is th
