864 Eczema. 



ointment, may be applied. The l)est dusting powders are tlie 

 strongly hygroscopic vegetable powders (Unna) because after 

 absorbing the exuded secretion they turn it into a paste which 

 protects the skin well. To these i3elong flour, amylum tritici 

 and a. oryzge, lycopodium, tannic acid, etc. Very favorable 

 results, however, are produced also by mineral substances such 

 as zinc oxide, lead carbonate (white lead), talcum, creta alba, 

 the different bismuth preparations (bismuth subnitrate, airol, 

 dermatol, xeroform, thioform) iodoform, etc., which may be 

 mixed advantageously with the vegetable powders in the pro- 

 portion of 5-10 :1. In more severe cases it seems proper to re- 

 tain the thickly applied powder on the surface of the skin by 

 means of a bandage, or to introduce it into the external audi- 

 tory canal by shaking the flap of the ear or by insufflating the 

 powder. On later treatments these powders are removed in 

 the same manner as are the deposits on the skin. Besides the 

 protecting powder, 10% creolin or ichthyol collodion, or trau- 

 matizin (guttapercha dissolved in 6 parts of chloroform) may 

 be applied to those places on the skin that are suitable. 



Ointments or pastes are properly employed later on or if 

 dusting powders cannot be employed on account of long hair or 

 will not stick to the skin. To these belong : zinc oxide ointment, 

 carbonate of lead ointment, lead and tannic acid ointment, 

 diachylon ointment with olive oil (Hebra) or with vaselin 

 (Kaposi) or paraffin (aa) ; the ung. simplex (Unna), in horses 

 hydrarg. bichlor. ammoniatum, which often has a very good 

 effect (1 part to 10 parts of lard) ; Unna's zinc paste (10 parts 

 of zinc oxide, 2 parts of terra silica, 28 parts of benzoated lard) 

 or Unna's sulphur-zinc paste (4 parts of precipitated sulphur to 

 the previously mentioned paste). Just as effective are sapolan, 

 5 to 107c protargol ointment, also nafalan (according to Uebele 

 best as house nafalan; 50% nafalan, 15% zinc oxide, 20% adeps 

 lana? anhydr, 15%) solid paraffin), naftalan as well as pastes 

 made with airol, xeroform, iodoform. Reinhardt found a mix- 

 ture of 15 parts of crude carbolic acid and 100 parts of green 

 soap very efficacious in eczema of the fold of the fetlock; this 

 was spread over the skin and a bandage applied. 



Itching is usually relieved or allayed entirely by means of 

 the dusting powders or ointments ; but if in spite of these it is 

 very severe, good service may be afforded by Jessner's ichthyol 

 paste (ichthyol, zinc oxide and powdered starch aa 1 part, vase- 

 line 2 parts), possibly painting with 10% lunar caustic, or com- 

 presses of lead water, Goulard's extract, or Burow's solution 

 may be employed. In case of need the following may be suitably 

 employed: anesthesin in 3% alcoholic solution or as a 10% 

 ointment, or as dusting powder with 9 parts of pulvis salicylicus 

 cum talco, also cocaine ointment (1 part cocaine with 25 parts 

 of paraffin ointment or lime water-linseed oil). Schlesinger re- 

 ports quick and favorable results with d\Tiial (didymura salicy- 

 licum) used as a dusting powder or as a 10% ointment. 



