The common cold is an upper respiratory infection that affects your nose, throat, sinuses and windpipe. Colds usually go away on their own within a week to 10 days.

Coronaviruses are a group of viruses known for causing the common cold. They have a halo or crown-like (corona) appearance when viewed under an electron microscope. The common …

May 24, 2023 · Most often, common cold symptoms start 1 to 3 days after someone is exposed to a cold virus. Symptoms vary. They can include: Runny or stuffy nose. Sore or scratchy throat. …

6 days ago · Learn about the different types of colds, their symptoms, and how to manage each variation effectively. Stay informed and feel better fast.

Aug 5, 2025 · The common cold and the flu may seem very similar at first. Here's what you need to know to correctly identify a cold and get the treatment you need.

Dec 3, 2025 · Most colds clear up on their own, but some get worse. Here are the warning signs your cold is getting worse—and when to contact a doctor.

Oct 15, 2024 · Learn about the common cold, its causes and spread, signs and symptoms and ways to prevent it.

4 days ago · Learn about the stages of a common cold, day by day, including the worst day of a common cold, why mucus gets thicker at the end, and what to expect by day five.

May 6, 2025 · A cold begins when a virus attaches to the lining of your nose or throat. Your immune system -- the body's defense against germs -- sends out white blood cells to attack …

5 days ago · As flu season peaks, and with several other illnesses going around, here's how to stay safe and healthy this season.