DISEASES OF THE DIGESTIVE SYSTEM. 159 



APHTHAE. 



What is the synonym ? 



Thrush; iu the human subject it is called muguet, or sprue. 



Give the definition. 



It is an inflammation of the mouth, due to the growth of a 

 vegetable parasite called the didium albicans. 



What are the symptoms ? 



This affection occurs mostly in the young (foals, calves, larribs, 

 dogs, etc.); the mucous membrane of the mouth becomes inflamed, 

 small white spots are present, soon becoming vesicles, which rupture 

 and leave excoriations. 



What is the prognosis ? 



Good, as a rule. 



Give the treatment. 



Cleanliness and soft food- are important; the use of mild as- 

 tringent and antiseptic solutions is usually beneficial. 



Any of the following drugs may be used, according to the case: 

 Potassium chlorate, potassium permanganate, copper sulphate, alum, 

 boric acid, silver nitrate, zinc sulphate. 



PAROTITIS. 



What is the synonym ? 



Parotiditis; in man it is called mumps. 



Define parotitis. 



It is an inflammation of the parotid gland, and characterized 

 by fever and the local signs of inflammation. 



What are the causes ? 



It is often due to germs; may be the result of an extension; 

 mechanical injuries; exposure to atmospheric changes may aid in 

 its development. • 



How is parotitis diagnosed ? 



By the swelling of the gland, by pain on pressure, by fever, 

 in some cases difficulty of deglutition, and the deviation of the head 

 to one side. 



