Cutaneous Hypertrophy. Elephantiasis. Pachydermia. 531 



or erosions. The margins of the sores become thick and irregular, 

 often undermined, and they graduallyincreaseby breaking down 

 of tissue in their depth or on their margin. In other cases 

 patches of skin dry or wither up, either in a superficial layer or 

 throughout its entire thickness, and these dried extra vascular 

 sloughs are gradually detached by granulation beneath. The 

 surrounding tumefaction is always extensive and the sores may 

 expose the deep seated structures — tendons, ligaments, fascia, 

 bones, joints — causing widespread destruction. 



Treatment. If the disease is due to capillary occlusion of 

 nervous origin, compresses with camphorated spirit, followed by 

 camphorated vaseline may be of advantage. If otherwise, anti- 

 septics will be in order : carbolated vaseline, salicylic acid cream, 

 iodoformed vaseline, a weak iodine ointment, creolin, or lysol in 

 water, or tar water. When the dead tissues are partially separated 

 the detachment may be hastened with knife or scissors and the 

 sores treated like a septic sore. 



CUTANEOUS HYPERTROPHY. ElvEPHANTlASIS. 

 PACHYDERMIA. 



Chronic thickening of skin and lymph plexuses, horse's hind limb after 

 eczema, grease, glanders, ox neck and head, knees, shoulder. Calcification. 

 Treatment: laxatives, diuretics, exercise, elastic bandage, friction, astrin- 

 gent^, iodine. 



Chronic thickening of the skin is most commonly seen in 

 horses as a sequel of lymphangitis in the hind limb, the engorg- 

 ment of the lymph plexus and thickening of its walls being asso- 

 ciated with a general productive inflammation and thickening 

 of the derma until the fetlock may be thirty inches or more 

 in diameter. It may follow eczema, grease or chronic glanders. 

 In cattle a productive dermatitis in the region of the head and 

 neck, has led in the experience of the author to a similar disten- 

 tion of the lymph vessels and morbid thickening of the skin. The 

 pads and calluses' which form on the knees of the camel and on 

 other parts subject to friction, furnish examples of hypertrophy 

 of another kind. Again the thick dense cutaneous plates on the 



