392 DISEASES OF THE SKIN. 



careful cleansing we use the same agents as are used in the moist 

 forms of eczema — zinc powder, corrosive sublimate, or nitrate of 

 silver. 



(e) We use tar and ichthyol preparations with good results in 

 the chronic forms of eczema where there is considerable cutaneous 

 thickening with cracks, fissures, etc. Ichthyol is especially use- 

 ful, and when used in concentrated form in ointments or lini- 

 ments it is much more valuable than tar preparations, because 

 it relieves the itching or irritation in a very short time. 



Oil of tar in the treatment of eczema (Leistikow) : 



R. — Oleum picis 3.0 



Spts. yiui rect. . 2.0 



^ther sulpliirric 1.0 



F. M. S. — Eub into the parts every third day. 



R. — Picis liquidse \ 



Saponis kalin. venal. I aa 100.0 



Spirit, dilut. J 



Apply once daily. 



R. — Ammon. sulfo-ichthyolic 15.0 



Aqua calcarias ] -. „. „ 



Oleum olivarum j • ■ • • • • 



Apply upon the thickened membrane once daily. 



(/) If there is considerable thickening of the skin, and if the 

 latter is covered at the same time with scabs, we can obtain good 

 results by rubbing salicylic oil (1 part salicylic acid in 35 parts 

 of warm olive oil) over it daily for a week. If this does riot 

 succeed, which, however, is very rare, we must first use tar or 

 ichthyol preparations and follow it up by the other. Some authors 

 advise friction with soft soap, chrysarobin ointment, iodoform, 

 or naphthalin, and washing with potash. 



Internal treatment, as a rule, has been abandoned. Formerly 

 all used purgatives or laxatives, and administered arsenic, but this 

 has lately fallen into disuse, and it is only in very obstinate or 

 chronic cases that anyone uses them. [The translator can not 

 entirely agree to this, as it is very evident that this disease is 

 frequently caused by some disorder of the stomach or liver, and 

 would advise slight laxatives, especially the salines, and small 

 doses of arsenic in chronic cases, and also certain restrictions in 

 the diet. J 



