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LARYNGEAL KERATOSIS is laryngeal epithelial lesions showing epithelial hyperplasia and hyperkeratosis and characterized by irregular areas of thickening and cornification of laryngeal mucous membrane. They are also known as
 * KERATOSIS LARYNGIS
 * LEUKOPLAKIA
 * PACHYDERMIA LARYNGIS

ETIOLOGY
The etiology may be associated with chronic inflammatory stimuli, and pharynx keratosis often exist simultaneously and Causes are –
 * 1) Tobacco
 * 2) Exessive consumption of Alcohol
 * 3) Vocal abuse
 * 4) Chronic post nasal discharge
 * 5) Syphilis
 * 6) Endocrine dyscrasia
 * 7) Dietary deficiency of vitamin A and B
 * 8) Virus infection
 * 9) Mycosis

SYMPTOMS AND SIGNS
Painless hoarsness is the Chief Symptom. Occasionaly there may be Itchy throat,cough,dysponea, throat discomfort,foreign body sensation,vocal cord dysfunction Clinical two ways:
 * 1) white spot disease
 * 2) papillary keratosis.