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1. inflammation of a mucous membrane with increased production of mucus, esp affecting the nose and throat in the common cold
2. the mucus so formed



or catarrhal inflammation, an inflammation of the mucous membranes; they become red, swollen, edematous and form and exude a fluid (exudate). The exudate may be transparent (serous catarrh) or admixed with mucus (mucous catarrh) or pus (suppurative catarrh).

Catarrh may be caused by a bacterial or viral infection—for example, catarrh (inflammation) of the upper respiratory tract: bronchitis, laryngitis, and head cold; or it may be caused by pathogenic fungi—for example, colitis. Catarrh of the stomach (obsolete name, gastritis) develops from improper diet, abuse of alcohol, and smoking.

In acute forms of catarrh, the matter exuded by the mucous membranes gradually decreases and full recovery ensues. Delayed treatment may cause an acute form to develop into a chronic inflammation, which may produce severe irreversible changes in the mucous membranes, including attenuation (atrophy) or disorderly proliferation (hypertrophy) with deterioration or complete loss of function of the affected organ. Chronic catarrh is prevented by prompt and comprehensive treatment of the acute forms.


An old term for an inflammation of mucous membranes, particularly of the respiratory tract.
References in periodicals archive ?
Boots Catarrh Relief Tablets are a good formula of echinacea, elderflower and marshmallow.
Ivy-Thyme Complex is a combination of herbs formulated to help soothe coughs, which are associated with catarrh and other bronchial symptoms.
Decongestant pills or nasal sprays from the chemist can help by breaking down the catarrh from the Eustachian tubes.
The best formula I know for treating catarrh problems is a Napiers' formula from the 1860s.
If it is very bad you could use an oral decongestant or antihistamine as this will stop catarrh production.
This allergy is known as allergic conjunctivitis or spring catarrh, and is caused by an increase in temperature and dust.
Maybe crime would be slashed if a mass taking of hoods down might lead to a rash of ear infections and catarrh among street gangs?
An 1899 illustration shows an inhalation machine being used by a toddler with chronic catarrh.
I did go through all the phases - a blocked nose, runny nose, sneezing, sore throat, funny voice, loss of taste (ruining the Sunday Carvery), catarrh then a cough that was dry one minute and something else the next then thinking I was coming out the other side like some intrepid hero getting through the Antarctic before realising this week that it was starting all over again
OLBAS FOR CHILDREN A GENTLE decongestant that relieves stuffy noses and catarrh to ease natural breathing, Olbas for Children is made with a combination of essential pure plant oils, including eucalyptus, mint and clove, and can help support a good night's sleep.
9%); while vernal catarrh was the second most common ocular abnormality with 51 (1.