94 MANUAL OF EQUINE MEDICINE. 



SCARLATINA-SCARLET FEVER, 



Definition. — A febrile disease, generally accompanying or 

 occurring as a sequel to some other general and debilitating 

 disorder, and characterized by the eruption of vesicles on 

 certain parts of the skin, and by petechial spots on the 

 mucous membrane of the nose and mouth, together with 

 sore throat and swollen cervical glands. 



Varieties. — Scarlatina Simplex, and Scarlatina Anginosa. 



Pathology and Etiology. — Scarlatina in the horse has 

 not very much analogy with the disease of the same name 

 in man. 



In the horse it rarely occurs as a primary disease, but 

 nearly always is an accompaniment or sequel of some other 

 debilitating disease, such as influenza or strangles. It 

 usually appears as the fever of the primary affection is 

 declining 



Scarlatina, like purpura hsemorrhagica, is traceable to 

 malhygienic conditions and weakened constitution associ- 

 ated with the primary malady. It is probably non-con- 

 tagious, and is more prevalent in spring-time than at other 

 seasons of the year. 



Symptoms of Scarlatina Simplex. — Usually begins to- 

 wards the end of the first week of the primary malady. 

 It may begin on the third, fourth, fifth, or sixth day, or 

 even later. The febrile symptoms become more severe, and 

 there is great prostration, as well as a slightly swollen con- 

 dition of the eyelids. The temperature is usually elevated 

 about two degrees, and the rise precedes the appearance of 

 the rash. 



The 'rash 'or 'eruption' of scarlatina take difierent forms, 

 of which two at least are distinguishable in the horse. 



Firstly, there are developed upon the skin of the face, 



