A system of practical medicine. By American authors. Vol. 3

by Unknown

(a) Osseous obstruction in the nasal chamber.

(b) Membranous obstruction in the nasal chambers from compensatory hypertrophy of the erectile tissue, alone or with hyperplasia.

(c) Obstruction arising from hypertrophy of the adenoid tissue in the pharyngeal vault.

(d) Contracture of the levator palati muscles.

SECOND VARIETY—that dependent on structural changes in the component parts of the nasal chamber.

This variety is associated with—

(a) Chronic inflammation of the nasal mucous membrane without hypertrophy of the erectile tissue.

(b) Atrophy of the turbinals and their associated mucous membrane.

(c) Necrosis of the bones which enter into the framework of the nasal chambers.

FIRST VARIETY.—Defects in nasal respiration induce hyperæmia, distension of the erectile tissue, hyperplasia of the mucous membrane, and inevitable distress in the nose. A sense of fulness across the bridge of the nose and at its sides is complained of. Frontal headache may be present.