Cutaneous Hemorrhage. Bloody Sweat. 519 



bleeding in summer when the filaria is most active, but when also 

 the skin is the most vascular and its tissues most relaxed. 



Of nervous haeniorrliages we have the experimental examples 

 of Bouchard and Simon from section of the sympathetic nerve in 

 animals, also those of Glen and Mathiew from irritation of the 

 sciatic in dogs with common salt. In man the nervous causation 

 has been seen in hysteria, under profound nervous shock, in 

 sclerosis of the cord, and even as the result of auto-suggestion. 

 This influence is constantly operative in violent inflammations in 

 which diapedesis and minute haemorrhages into the affected 

 tissues are marked phenomena, and under such a cause the gland 

 ducts especially are the seat of transudation. When the skin is 

 abraded, cracked, or blistered it occurs also on the surface of the 

 exposed derma. 



Symptoms. With active local congestion or inflammation the 

 blood usually oozes in drops from the surface, and drying con- 

 cretes into dark red crusts. In other instances, however, it drops 

 from the surface, or even flows, producing anaemia and even 

 death. Into such cases hsemophilia presumably enters. Hsemor- 

 rhagic swellings like wheat kernels or beans also form in the 

 skin. 



Treatment. Apart from the contagious and parasitic diseases, 

 and scurvy, the general treatment will be styptic. Cold water, 

 ice, snow, a stream from a hose, solutions of tannin, matico, iron 

 chloride or sulphate, alum or gelatine may be employed. In- 

 ternally the iron salts, gelatine, atropine, ergot, lead acetate, or 

 quinia may be given. In hae.nopliilia the gelatine especially 

 should be tried both locafly and generally. When it is possible, 

 as in the case of the head, gravitation should be availed of. Else- 

 where a compress bandage may be used. 



