INFLAMMATION OF THE PAROTID GLAND. 

 PAROTITIS. 



Causes : traumatic ; calculus ; grains ; barley and other beards ; infecting 

 microbes. Symptoms : fever, dullness, buccal heat, salivation, difficult 

 mastication, swelling of gland and duct, protruded nose, stiff neck, fcetor 

 dyspncea, facial paralysis, induration of gland, abscess. Diagnosis from 

 pharyngitis, abscess of guttural pouch or pharyngeal glands ; from tumors. 

 Treatment : avoidance of causes ; derivation ; astringent, antiseptic washes; 

 wet antiseptic bandages to throat ; cool pultaceous diet. Open abscess and 

 disinfect. For induration deobstruents. For sloughing antiseptics. 



This may be caused by traumatism, such as incised punctured 

 or bruised wounds. Wounds inflicted by the goad, by horns, 

 and even by the yoke in cattle must be looked on as factors. It 

 occurs from obstruction of the salivary ducts by calculi, or by 

 grains, seeds, or pebbles introduced from the mouth ; from their 

 irritation by the beards of barley and other plants (brome, rye, 

 wheat, etc.); and from the localization in the gland of specific 

 inflammation like strangles, pyaemia, canine distemper, tubercu- 

 losis and pharyngitis. In most of these cases infective microbes 

 are prominent factors. They enter with penetrating bodies from 

 the skin ; they extend through the weakened and debilitated 

 tissues in bruises, they penetrate the Stenonian duct with the 

 various foreign bodies from the mouth ; irrespective of foreign 

 objects they make their way up the duct by continuous growth 

 from the buccal orifice ; in case of calculus or other obstruction 

 their extension is favored by the local congestion and debility 

 and by' the stagnation of the saliva above the point of arrest. 

 When present these microbes even favor the deposition of the 

 salivary salts and formation and increase of calculi so that the af- 

 fection may advance in a vicious circle, the microbes favoring 

 calculus and the calculus favoring the increase of microbes. 



Symptoms. In the horse in particular there may be premoni- 

 tory symptoms of fever, dullness, heat of the mouth, ptyalism, 

 slow and imperfect mastication, and the retention of food in the 

 cheeks. 



The Stenonian duct becomes swollen and painful. The 

 parotid becomes hard, hot, tender, and is surrounded by a softer 



4i 



