ERYTHEMA CAIvORICUM : SOLAR ERYTHEMA. 



WHITB FACE AND FOOT DISEASE^ IN HORSES. 



England to Africa, on white skins, especially of face. Symptoms : local 

 congestion, swelling, itching, desquamation, during extreme heat : in worst 

 cases fever, dullness, inappetance, costiveness, diarrhoea, head constantly 

 moving, rubbing, vesicles, pustules, excoriations, cracks, fissures, septic 

 ulcers in nose and mouth, submaxillary and pharyngeal swellings, recovery 

 with derrnal thickening and tenderness. Diagnosed from petechial fever 

 by the itching, and the absence of petechise. Prevention : breed solid dark 

 colors, avoid white skinned in hot climates or work in shade, away from 

 hot winds ; sunshade ; avoid friction and wetting in sunshine. Treatment : 

 shade, astringents, cool irrigation, vaseline, zinc ointment, lamp black, an- 

 tiseptics. Tie so as to prevent rubbing. 



This has been observed in different latitudes from the cool 

 climate of Great Britain, tothe burning suns of Africa, though 

 it reaches its highest intensity in the hotter regions. The parts 

 to suffer are those that are devoid of pigment, as the white star, 

 snip or blaze on the face, the white feet or legs, the white areas 

 in the piebald, and the whole surface in the albino. The white 

 face, however, suffers more than the white legs, apparently be- 

 . cause of its more constant exposure, the absence of shadow from 

 the trunk, and the delicacy of the skin and fineness and thinness 

 of the hair. 



Symptoms. In slight cases there may be no constitutional 

 disorder, only redness, itching, swelling and subsequent des- 

 quamation of epi4ermis on the white portion of the skin, which 

 may prove persistent so long as hot weather lasts and recover on 

 the advent of cold. 



The more violent cases seen in warmer climes, may be heralded 

 by febrile reaction, dullness, prostration, inappetance, constipa- 

 tion and sometimes diarrhoea. The head may be kept in con- 

 stant movement, the itchy white parts being rubbed on any 

 object within reach, and the limbs are stretched, the front ones 

 forward and the hind backward, with a tendancy to rub them 

 with the nose or foot. The skin at first red, becomes later 

 swollen, covered with vesicles which pass into pustules, burst ' 

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