158 



Diseases of the Genital O'gans 



within a few weeks after infection, there appear peculiar 

 and pathognomonic cutaneous eruptions in the form of 

 plaques, or elliptical elevations. These eruptions appear 

 suddenly, largely about the flanks, neck, shoulders, sides and 

 thighs, as more or less circular elevations, one to several 



Fig. 225 — Advanced Dourine in Mare with Extreme Emaciation and 

 Depigmentation ofVulvar Lips. (Hutyra and Marek. ) 



inches in diameter. The margins of these are very abrupt 

 and stand up above the level of the healthy skin like the 

 eruptions of urticaria. The hairs upon them are erect. 

 They appear suddenly, usually not in great numbers, but only 



