252 Diseases of the Horse* 



CHAPTER XI. 



DISEASES OF THE SKIN. 



Ringworm. 



Nettle Rash — Surfeit — Urticaria. 



Hoist Tetter — Humid Tetter — Eczema. 



Mallenders and Sallenders — Psoriasis of the Carpus and the 



Tarsus. 



Warhles — Grubs — Sitfasts. 



3Iange — Itch. 



lAce. 



EINGWORM. 



There are two forms of ringworm in the horse, the one 

 known by surgeons as herpes , which is an affection of slight 

 importance and not contagious; the other called tinea which 

 is contagious, obstinate and disfiguring. 



Herpes is characterized by an eruption of small blisters the 

 size of a grain of w^heat, on inflamed patches of skin which 

 assume a circular form. It is usually owing to indigestion, 

 or being shut up in a railroad car, or the hold of a ship in 

 close or foul apartments. 



Contagious ringworm is, on the contrary, found on well- 

 cared-for animals as well as neglected ones. It attacks and 

 destroys the hairs, leaving patches of baldness usually of a 

 circular form, the surface of the patch being covered wath 

 fine, white, bran-like scales. The hairs around the edges first 

 become dry and brittle, and then break off, and then the 

 patch gradually extends. This form of ringworm is owing 

 to a minute parasite on the skin, supposed to be a plant. 



Treatment. — For simple ringworms or herpes, it is enough 

 to bathe the parts with a sugar of lead lotion, as : 



No. 276. Acetate of lead, ^ oz. 



Water, 1 pt. 



