Advertisement

What causes catarrh?

Catarrh is caused by outside irritating agents that end up in airways and cavities. To fight this reaction, the body sends white blood cells that protect against infection, which build up in the affected area and cause swelling a mucus production. Common infections like colds can cause catarrh, as well as allergies. Allergic rhinitis is traditional indoor and outdoor allergies like dust and pollen. Non-allergic rhinitis is when irritants like pollution and weather cause a person's blood vessels to swell. Both cause catarrh.

Nasal polyps, which are obstructing bumps inside the nose, prevent the beneficial drainage of mucus from the nose. This buildup of mucous causes catarrh.

Continue Learning about Nose Disorders

Nasal Polyps and Eosinophilic Asthma
Nasal Polyps and Eosinophilic Asthma
Nasal polyps are benign growths that form in the nasal cavity and sinuses. Shaped like teardrops, they vary in size and may form on their own or in cl...
Read More
What are some triggers of non-allergic rhinitis?
Sigma NursingSigma Nursing
Rhinitis is a condition in which the blood vessels that line the nose become inflamed and swollen, c...
More Answers
Are allergies the same as nose disorders?
Brian J. Broker, MDBrian J. Broker, MD
The nose is just one of many parts of the body that can be affected by allergies. And nose disorders...
More Answers
Why Do I Keep Getting Bloody Noses?
Why Do I Keep Getting Bloody Noses?

Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.