752 CATARRHAL OR ECZEMATOUS INFLAMxMATIONS. 



differently formed and constituted crusts. The primary exuda- 

 tion would appear to be largely connected with the hair- 

 follicles, around which the minute vesicles are grouped ; these 

 follicles seem also usually in the centre of the first-formed and 

 small pustules. 



In Eczema ruhrum, where both general and local symptoms 

 are tolerably well marked, there is often some gastric derange- 

 ment with disturbed appetite, sometimes slight fever, and 

 often obvious external appearances of unthriftiness. Locally 

 the parts affected feel hot, somewhat tender, and a little 

 swollen ; over extensive areas the hair may be removed, the 

 skin a little excoriated, weeping from a discharge of ichorous, 

 blood-stained fluid, or in portions covered with a more or less 

 perfectly formed brown or yellowish crust. 



These conditions are apt to occur when the inflammation 

 affects the insides of the thighs, and in situations where inter- 

 trigo is existing. The discharge from these patches is liable 

 to irritate the parts yet unaffected with which it may come in 

 contact, and to cause removal of hair. 



With im2^etigenous eczema, both in the material discharged 

 from the vesicles and in that exuded when these and the crusts 

 are removed, there is mingled a good amount of puriform 

 material ; with probably no more constitutional disturbance 

 than in the clearly marked inflammatory form of E. ruhrum. 

 With the distinct local irritation we observe that peculiar- 

 coloured crusts continue to form, and beneath these much 

 ichorous and purulent matter. This form is rarely general ; 

 while in the horse the usually recognised local development, 

 popularly known as grease, we prefer considering in the order 

 to which it more properly belongs — diseases of the gland- 

 structures of the skin. 



In addition to these distinctions and forms of manifestation 

 of eczema, others are occasionally made having reference to the 

 locality of the primary lesions. Thus E. facialis vel lahicdis, 

 occurring in certain districts and in particular animals, is eczema 

 of the impetigenous form occurring in the skin of the face and 

 lips ; E. mammm, eczema confined to the mare, and appearing 

 around the nipple or over the mammary gland ; E. genitale, 

 appearing over or upon the genital organs — penis, vulva, and 

 vagina — and marked with much disturbance and irritation. 



