The common cold is a viral infection that affects the upper respiratory tract. The most common cause is a rhinovirus, and the most common symptoms are a stuffy or runny nose, sneezing, and a scratchy, sore throat.
The average common cold lasts anywhere from 7 to 10 days, but they can last as long as 2 weeks. Depending on your overall health, you may have symptoms for more or less time. For example, people who smoke or have asthma may experience symptoms for a longer period of time. If your symptoms don’t ease or disappear within 7 to 10 days, make an appointment to see a doctor. If your symptoms begin worsening after 5 days, it’s also important to see a doctor.