Alert

Mucus

Mucus is a thick, slippery and usually clear substance that is produced in the lining of body cavities or canals, such as the nose, throat, sinuses, and airways of the lungs. Mucus protects and moistens the lining of body organs, such as the stomach and intestines, and traps dust particles, smoke, bacteria, and other irritants that enter the nose when a person inhales.

Mucus that becomes too thick and sticky can block the airway or digestive system or cause other problems in the body. Thick and sticky mucus is difficult for the body to remove and can increase the risk of infection.

Symptom Checker

Feeling under the weather?

Healthwise Symptom Checker Logo

Use our interactive symptom checker to evaluate your symptoms and determine appropriate action or treatment.

Decision Points

Our interactive Decision Points guide you through making key health decisions by combining medical information with your personal information.

You'll find Decision Points to help you answer questions about:

Interactive Tools

Get started learning more about your health!

Our Interactive Tools can help you make smart decisions for a healthier life. You'll find personal calculators and tools for health and fitness, lifestyle checkups, and pregnancy.

Top