CHAPTER XXXI. 



ERUPTIVE OR PETECHIAL FEVERS, 



USUALLY ASSOCIATED WITH EPIZOOTICS, ALTHOUGH THEY 

 DO NOT THEMSELVES USUALLY ASSUME EPIZOOTIC CHAR- 

 ACTERS. 



I. — PURPURA H^-MORRHAGICA, DIAEEHA^MIA. 



This disease was arranged in the first edition of this work in 

 the same group as the charbonous affections, which in several 

 characteristics it simulates ; but the life history of the morbid 

 processes, the causes, the non-contagiousness, and the absence 

 of organisms in the blood in this disease separate it from anthrax- 

 Fault has been found with the term " purpura hsemorrhagica," 

 and Delafond has named the disease " diastashsemia." I think the 

 term is more objectionable than purpura, as it merely implies a 

 standing apart or a separation of blood ; and were I to venture 

 upon a new term, I would suggest "diarrhaemia" — Gr. Sea, through; 

 'pe(o,l flow; atVa, blood; or a disease characterised by break- 

 ing up of the blood, and ecchymosis. 



Definition. — An eruptive non-contagious fever of an inter- 

 mittent type, usually, but not uniformly, occurring as a sequel 

 to another disease. 



Pathology and symptoms. — The primary manifestations are 

 often uncertain. In some instances the earliest symptom may 

 be the expression of pain in one or more limbs, with but slight 

 swellings, which, however, become more pronounced in a very 

 short time.. In other instances, the approach of the disease is 

 shown by the appearance of a few petechial spots in the nostrils 



