Summary

1911 Encyclopædia Britannica, Volume 16… (1911)

LARYNGITIS, an inflammation of the mucus of the larynx. There are three chief varieties: acute, chronic, and oedematous. The larynx is also liable to attacks of inflammation in connexion with tubercle or syphilis.
Acute Laryngitis may be produced by an independent catarrh, or by one extending either from the nasal or the bronchial mucous membrane into that of the larynx. The causes are various, “catching cold” being the most common. Excessive use of the voice either in speaking or singing sometimes gives rise to it.
Source: Wikisource

1911 Encyclopædia Britannica, Volume 16… (1911)

It is extremely common in people who habitually over-use the voice, and is the cause of the hoarse voice one associates with street sellers. The constant inhalation of irritating vapours, such as tobacco smoke, may also cause it. There is usually little or no pain, only the unpleasant sensation of tickling in the larynx, with a constant desire to cough. The changes in the mucous membrane are more permanent than in the acute variety, and there nearly always accompanies this a chronic alteration of the membrane of the pharynx (granular pharyngitis) .
Source: Wikisource

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