Definition of Diphtheria
1. Noun. Acute contagious infection caused by the bacterium Corynebacterium diphtheriae; marked by the formation of a false membrane in the throat and other air passages causing difficulty in breathing.
Definition of Diphtheria
1. n. A very dangerous contagious disease in which the air passages, and especially the throat, become coated with a false membrane, produced by the solidification of an inflammatory exudation. Cf. Group.
Definition of Diphtheria
1. Noun. (pathology) A highly infectious disease of the upper respiratory tract characterised by a sore throat, fever, and difficulty breathing. Its effects are due to a potent toxin secreted by a bacterium. ¹
¹ Source: wiktionary.com
Definition of Diphtheria
1. [n -S]
Medical Definition of Diphtheria
1.
An acute infectious disease caused by toxigenic strains of Corynebacterium diphtheriae, acquired by contact with an infected person or a carrier of the disease, which is usually confined to the upper respiratory tract.
It is characterised by the formation of a tough membrane (false membrane or pseudomembrane) attached firmly to the underlying tissue that will bleed if forcibly removed.
In the most serious infections the membrane begins in the tonsillar (faucial) area on one tonsil and may spread to involve the other tonsil, uvula, soft palate and pharyngeal wall, from where it may extend to the larynx, trachea and bronchial tree and may cause bronchial obstruction and death by hypoxia. Diphtheria also occurs in a cutaneous form and may rarely involve the eyes, middle ear, buccal mucosa, genitalia and umbilical stump, usually secondarily.
Systemic effects, chiefly myocarditis and peripheral neuritis, are caused by the exotoxin produced by C. Diphtheriae.
Synonym: Bretonneau's angina.
Origin: Gr. Diphthera = leather
This entry appears with permission from the Dictionary of Cell and Molecular Biology
(11 Mar 2008)
Lexicographical Neighbors of Diphtheria
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