138 DISEASES OF THE SKIN.^ 



agents as follows.— 



R Creasoti 5 i 



Ungt. Hydrarg. Nit. 5 ij 

 Sulphuris % i 



Adepis 5 vi 



Ft. Ungt. Sig. Apply quite freely to the diseased parts. 

 The proportion of carbolic acid to the Canada balsam might be lessened, 

 say one to eight, and used more freely, but its efficacy would be impaired, 

 and the stronger solution ought to be safely used without danger of absorp- 

 tion, as it needs merely a trace applied to the centre of each pustule. 



<P<RU<RIG0. 



Prurigo is a disease of the skin, manifesting itself by slightly reddish, 

 very itchy papules of about the size of a pin head. This eruption may 

 appear differing little or none in color from the surrounding skin, and be 

 seen with difficulty ; but to the touch it is obvious, as the finger passes 

 over the region affected, the papules as minute elevations cause the sur- 

 face to feel rough and uneven. The intense itching induces scratching; the 

 papules are laid bare, and are succeeded by blood-red crusts of about the 

 same size. The cause of prurigo can only be conjectured. Various specula- 

 tions have been advanced; thus, certain kinds of food, worms, kidney dis- 

 orders, debility, poverty of blood are said to exert predisposing influences. 



The disease is chronic, and at times exceedingly obstinate. Its duration 

 and curability are uncertain. In young animals the affection often yields 

 very readily, but in old dogs with worn out systems, it is almost incurable. 



In the treatment it is important to correct any disorders, and apply con- 

 stitutional remedies as indicated. Local applications are of benefit in 

 many cases. 



When the disease attacks puppies, frequent washing, using the sapo 

 viridis, and afterwards an ointment of sulphur and lard, is often sufficient. 

 If the itching is uncontrollable the following may be freely applied. — 

 R Tr. Opii 3i 



Creasoti gtt.xv 



Adepis 3 iij 



Ft. Ungt, Sig. External. 



In some cases the oil of tar and glycerin, one part to four, will be useful, 

 or the tar and sulphur ointment recommended in eczema. A lotion of 

 carbolic acid, from one to two drachms to a pint of water, or the acid 

 incorporated with lard, from five to ten grains to the ounce, acts well in 

 cases where the itching is intense. The internal use of iron, arsenic, and 

 cod liver oil is advisable in cases where the disease is of long standing. 



