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 …

The meaning of COLD is having or being a temperature that is uncomfortably low for humans. How to use cold in a sentence.

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. …

4 days ago · 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.

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.

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

Nov 25, 2025 · With similar symptoms, it can be difficult to tell which illness is which. Here’s what to know.

Sep 4, 2025 · The common cold causes symptoms like a runny nose and sore throat. Learn how you catch a cold and what helps speed up recovery.

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 …