CHAPTER XV. 

 SKIN DISEASES. 



Classification. General Causes and Treatment. Congestion of itic skin, 

 Chafing, Cliilling, Irritants, Sun's Rays. Congestion with Pimples, Papules. 

 Inflammation with Blisters, Vesicles. Inflammation with Pustules. Inflam> 

 mation of Horses' Heels, .Swelled Legs, Cracked Heels, Grease, Grapes, 

 Scratches. Inflammation of the Skin with Nodular Swellings, Tubercles, 

 Surfeit, Urticaria. Scaly Skin Disease, Pityriasis, Mallenders, Sallenders, 

 Scratches. Boils, Furuncles. Nervous Irritation of the Skin, Neurosis. 

 Prurigo. Warts. Callosities. Black-pigment Tumours. Epithelial Cancer. 

 Parasitic Skin Diseases. Common Ringworm. Tinea Tonsurans. Honey- 

 comb Ringworm, Favus. Diffuse Baldness, Tinea Decalvans, Parasitic 

 Pityriasis. Parasitic Grease. Contagious Foot-rot. Mange. Scab. Itch. 

 Scabies, Acariasis. Ticks. Ixodes. Warbles, I^arva of the Gadfly. Attaf'ks 

 of Flies, Maggots. Sheep-lick. Melophagus Ovinus. Fleas. Lice. Ery- 

 sipelas. Wounds — cut, punctured, bruised, torn, poisoned. Burns. Scalds. 



Skin Di.seases will be considered under the following heads : 



1. Diseases due to general causes, and embracing all the grades 

 of inflammatory action : — Congestion — a red pointed eruption 

 (papules) — a sunilar eruption with minute blisters (vesicles) — 

 the formation of larger hemispherical blisters (bullae) — the 

 formation of pus in these vesicles (pustules) — the formation of 

 round nodular transient swellings (tubercles) — the excessive 

 production of scales or dandruff (squamous) — pustules with 

 circumscribed sloughing of the deeper layers of the skin (boils). 



2. Diseases manifested by deranged sensation — Neurosis. 



3. Diseased growths — warts — callosities — epithelial cancer, 

 etc. 



4. /Vr^«V/V rt'wa.y^^— vegetable and animal. 



