what happens when you get a head cold?

When you get a head cold, typically caused by a viral infection, the body's immune response triggers inflammation in the nasal passages and sinuses. This leads to symptoms such as a runny or stuffy nose, sneezing, sore throat, and sometimes mild headaches. The body produces excess mucus to help flush out the virus, which can contribute to congestion. While uncomfortable, most head colds resolve on their own within a week to ten days.