180 SCAELATIJfA. 



Complications. — Scarlet Eever is sometimes associated 

 with Elieumatism ; with CoDgestion of the Lungs ; with a low 

 typhoid state of Fever ; with Typhoid Inflammation of the 

 Lungs ; and with Purpura Haemorrhagica. 



Peogis'osis. — If the pulse of the patient becomes reduced 

 in the number of its beats within a given time — if the appetite 

 gradually improves, and the debility disappears — if the swollen 

 limbs gradually reduce in size, and the skin becomes cooler, a 

 favourable termination may be expected ; but if the debility 

 becomes more marked — the pulse more irritable, feeble, and 

 indistinct — the limbs more swollen, with other symptoms, 

 such as total loss of appetite, difficulty of breathing from an 

 insidious typhoid inflammatory action going on within the 

 lungs ; and finally, if Purpura Hsemorrhagica supervenes the 

 prognosis is unfavourable, and the chances are that the patient 

 will die. 



Cause s. — The disease in question is generally manifested 

 " epidemically, or as an epizooty among horses," during the 

 spring and summer months,* so that its remote causes are 

 difficult to arrive at ; its exciting causes, however, appear to 

 depend upon those states of bronchial and laryngeal disease so 

 common during the periods of the year above named. I have 

 known it to supervene upon an attack of strangles, and upon 

 what is designated " Influenza." Animals of all ages are 

 subject to its influence. One of the most severe cases I ever 

 had under my care occurred in a foal three months old. It 

 may be stated, however, as a fact, that young horses are 

 more liable to the disease than old ones, and that dm'ing its 

 prevalence the exposure of horses to cold and wet is very 

 likely to induce it. 



* Tliis fact, I believe, was first noticed by myself. 



