120 DISEASES OF CATS 



Schonleinii. The parts commonly affected are 

 the paws, head, forehead, ears, and lips. 



Symptoms. — On the parts affected, circular 

 raised patches covered with yellow crusts and 

 varying in size from that of a pin head to that 

 of a five-cent piece, are observed. As the 

 crusts grow older they become gray in color 

 and more powdery! If the crusts are removed, 

 a cup-like depression is seen, the marginal skin 

 being inflamed and indurated. 



The lesions spread from the periphery, the 

 hair being destroyed and circular bald patches 

 remain. The lesions under the crusts are at 

 first moist with serum, but this soon dries up, 

 leaving the patch covered with powdery scales. 

 Irritation is not very marked, and there are no 

 constitutional disturbances. The fact that 

 favus is transmissible to the human being 

 should not be lost sight of and the proper pre- 

 cautions must be taken to prevent the spread 

 of the disease. 



Treatment. — The hair should be clipped off 

 the affected parts and burned immediately. 

 The crusts should be removed by soaking with 

 a strong solution of carbonate of soda and 

 scraping, and the parts painted with tincture 

 of iodin, a five per cent solution of silver ni- 

 trate, or given an inunction of iodin ointment 

 well rubbed in. 



