ALOPECIA AEBATA 101 



ceive until the catarrhal condition has been terminated. 

 In some instances the sterility is temporary in char- 

 acter, depending probably upon the relative activity 

 of the diseased condition within the uterus; after one 

 or two seasons of barrenness the cow will again be- 

 come pregnant. Many eases, however, terminate in 

 permanent worthlessness of the cow for breeding or 

 dairy purposes. 



ALOPECIA AREATA 



This is a condition characterized by the falling out 

 of the hair in irregular spots on various parts of the 

 body. 



The condition deserves mention in this treatise only 

 for the reason that valuable breeding or show animals 

 are apt to be disfigured by the affection to such an 

 extent that their market or showing qualities are in- 

 jured. 



Alopecia areata appears as a purely local disease; no 

 systemic derangement is noticed. It begins with 

 the appearance of small, rounded bald areas, which 

 first appear on the neck and shoulders as a rule. 

 Gradually these bald areas enlarge in size, and fresh 

 spots appear in other regions also. The skin is ap- 

 parently normal, at least nothing in the form of a 

 skin lesion per se can be detected. In aggravated 

 cases the bald areas may reach great dimensions; bare 

 patches of the size of two hands are not unusual. 



The treatment of this disease is wholly empirical. 

 In some cases we have ob1,ained fine results from mas- 

 saging the bald areas with pure cajuput oil, while at 

 the same time a course of alterative treatment was 

 given internally. We can recommend no treatment 



