DISEASES OF THE PHARYNX.
BY J. SOLIS COHEN, M.D.
Acute Pharyngitis.
DEFINITION.—An acute inflammation of the mucous membrane of the pharynx, whether implicating the glandular structures or not, and usually associated with inflammation of contiguous structures.1 Acute pharyngitis may be catarrhal or erythematous, phlegmonous or suppurative, ulcerative, herpetic or membranous, gangrenous, and erysipelatous.
1 In deference to the plan suggested by the editor of this work, separate articles have been prepared under the heads of Pharyngitis and Tonsillitis respectively. The two processes, however, are so frequently associated that they should be studied together, the more that both of them are likewise associated with extensions of the inflammatory process to the palate, palatine folds, base of the tongue, and other contiguous structures. The writer has always preferred to describe these diseases under the head of sore throat, which does not presuppose any limitation to individual anatomical structures.
SYNONYMS.—Sore throat; Angina.
ETIOLOGY.—Acute pharyngitis may be idiopathic, deuteropathic, traumatic, toxic, or parasitic. The predisposing cause may be diathetic, as scrofula, rheumatism, gout, and syphilis; it may be a depression of the vital powers from any cause, such as continued exposure to foul air or impure water, improper diet or sedentary occupations. There exists in some individuals a predisposition to "catching cold," independent of any cachexia. Pharyngitis may occur at any age, but is more frequent in the young. One attack increases subsequent liability to the disease.
The exciting cause is usually exposure to cold and damp. Hence the disease is more frequent at the seasons when these conditions prevail or when sudden changes of temperature are taking place. Sudden chilling of the body when overheated may occasion it in warm weather; for instance, a plunge into the ocean while covered with perspiration. The ulcerative variety, when not due to syphilis or tuberculosis, is usually of septic origin, and is apt to occur in the debilitated especially. The gangrenous form, which is rare, results from profound blood-poisoning. The herpetic or membranous variety may be due to disturbance of the trophic nervous system, and has been attributed to mental emotion (Feron), to uterine disturbances (Bertholle), to the contact of irritating substances and to miasmatic or fetid exhalations (Peter). It prevails principally during epidemics of diphtheria or of scarlet fever, and may be of cryptogamic origin. The cryptogam of thrush is sometimes developed on the mucous membrane of the pharynx, either primitively or as an extension of the disease from the oral cavity. Certain conditions of the atmosphere give rise at times to so-called epidemic pharyngitis. Paludal or malarial pharyngitis may arise from the same causes as malarial fevers. Pharyngitis occurs in the various exanthemata as an essential part of the morbid process, and is always more or less prevalent during epidemics of measles or scarlet fever. It occurs not rarely in typhoid fever, and is an occasional complication of pneumonia, rheumatism, herpes, pemphigus, and other acute affections. It is one of the complications of facial erysipelas, but erysipelatous pharyngitis may occur primarily. Pharyngitis may be excited by the inhalation of deleterious solid, fluid, and gaseous substances in the atmosphere which act mechanically or chemically on the mucous membrane. Many drugs administered in poisonous or even in medicinal doses may give rise to an attack of inflammation of the pharynx; among them may be cited preparations of mercury, antimony, iodine, arsenic, copper, lead, zinc, silver, stramonium, belladonna, and most of the Solanaceæ. Traumatic pharyngitis results from deglutition of boiling water or of acrid or caustic substances; from inhalation of hot air, of steam, or of flame, and is most usually associated with traumatic oesophagitis or with laryngitis.
PATHOLOGY AND MORBID ANATOMY.—Acute pharyngitis, as most commonly encountered, is a simple erythematous inflammation of the mucous membrane; the palate and tonsils being likewise involved. In most instances there is simply an active hyperæmia which may subside in a day or two. When more intense than this the mucous membrane of the palate, tonsils, and pharynx becomes congested and swollen, uniformly or in circumscribed areas. In some instances the submucous tissue of the pharynx is greatly relaxed, and the mucous membrane lies upon the substructure in thick folds. In others there is more or less oedema. The mucous follicles, especially those of the posterior palatine folds, are frequently swollen. There is an abnormal though not excessive secretion of viscid mucus, clear or turbid. The uvula is often swollen or distended with serum, and its mucous membrane is relaxed. Sometimes it appears as though pasted to one of the folds of the palate by viscid secretion. The posterior palatine folds may be distended with serum, and their arched appearance thus become obliterated. Resolution occurs gradually in some instances, quickly in others.