CATARRHAL INFLAMMATION 147 



of small papules, or vesicles, which sooner or later break and discharge 

 a watery Huid of a somewhat adhesive character, as shown l)y the gluing 

 of the hair in tufts. Later, small scabs or crusts appear at the seat of 

 eruption, and are frequently rubbed off by the animal trying to relieve 

 the itching, leaving raw surfaces beneath. 



Eczema presents itself under several forms. When the attack is mild, 



Fig. 266.— Eczema 



without any symptoms of constitutional derangement, the disease is 

 termed eczema simplex. In more severe attacks, when the inflammation 

 of the skin is more pronounced and the surface is swollen and tinged with 

 red, the term eczema ruhrum is used. In the most severe form of the 

 disease the eruption becomes pustular, when the small vesicles are filled 

 with "matter" instead of watery fluid. A fourth form of the disease is 

 characterized by the cuticle of the skin being thrown off from the affected 



