Selected monographs on dermatology / P.G. Unna [and others].

Date:
1893
Catalogue details

Licence: Public Domain Mark

Credit: Selected monographs on dermatology / P.G. Unna [and others]. Source: Wellcome Collection.

    528/636 (page 510)
    forming one of its constituents. This may be done by adding to the liquid a little nitrous acid (prepared by acting upon starch with nitric acid and heat, and diluting with about an equal volume of water). On subsequently adding some gelatinised starch a tint varying from faintest purplish to blue will be obtained.1 IPECACUANHA. The prolonged application of ipecacuanha to the skin causes irritation characterised by redness, and the formation of papules, vesicles, and pustules, which, on healing, are not followed by pitting or scarring. According to Baudot, the papules are large, few in number, red from base to summit, without circumferential areola. The lesions have no tendency to run together. They are intensely itchy, and from the scratching which they provoke, they frequently become covered with blood-crusts analogous to those of prurigo. They disappear slowly. According to Delioux, the pustules may be umbilicated like those produced by antimony. A diagnostic feature is that the former do not ulcerate and leave scars. The internal use of ipecacuanha may also occasion eruptive disturbances. Turner describes a case in which there was burning heat diffused over the whole surface of the body, together with a kind of erysipe- latous eruption covering every portion, similar to what is seer after exposing the naked skin to a burning sun. Circulai patches, with elevated, thick, and rounded edges, and of e fiery colour, characterised the eruption. NUX VOMICA. STRYCHNIA. Dierbach, quoted by Piffard, says that strychnia internally administered will produce formication and pruritus, and i sensation as if the skin were pricked with needles, or then may be diaphoresis and a miliary eruption. 1 Burlureaux confirms the tests of iodoform toxaemia given by Ponce that (0 a piece of silver placed in the mouth gives rise to a taste of garlic (2) that when a pinch of calomel is mixed with the saliva a canary-yellov tint is produced due to the formation of iodide of mercury.—T. C: F.