96 MANUAL OF EQUINE MEDICINE. 



The tissues, glands, and other structures in the neigh- 

 bourhood of the throat and larynx are swollen, infiltrated, 

 and painful. In some protracted cases the bronchial or sub- 

 maxillary glands may suppurate. 



The parts of the skin where the eruption is present are 

 not distinctly elevated, and in this particular they differ 

 from the localised swellings of purpura hsemorrhagica. 



The pulse is rapid, varying from 60 or 70 in mild cases, to 

 100 or more in severer attacks ; it is weak, of small volume, 

 and frequently dicrotous, especially in the later stages. 



The respirations are accelerated, especially when the 

 lungs are congested. 



(Edematous swellings may suddenly appear on the in- 

 ferior parts of the abdomen and chest, but they are not of 

 constant occurrence. There is a discharge of serous fluid 

 from the nose, which often becomes yellowish-brown, and in 

 rare cases sanguineous. 



The bowels are usually confined. 



The fever, when uncomplicated, generally declines in six 

 to eight days ; not suddenly, but by oscillations. 



During the rash and infiltration of the structures around 

 the throat the fever shows no abatement. 



After the fever, and decline of the rash, there is shedding 

 of the hair where exudation from the vesicles has occurred, 

 and desquamation of the epidermis over the body. Great 

 debility often remains after active symptoms have disap- 

 peared, and there is great weakness of the heart, and ten- 

 dency to effusion into the pleurae and pericardial sac. 



Scarlatina is sometimes followed by inflammation of a 

 rheumatic character. 



Prognosis. — Is very uncertain. If the swelling in the 

 throat increases, and the breathing becomes difficult from 

 implication of the upper air-passages, or congestion of the 

 lungs, the prognosis is very grave. 



