Skin Eruptions and Idiosyncrasy

Scarlatinal or urticarial rashes are not rare after therapeutic doses of quinine, and susceptible individuals may develop dangerous edemas of the mucous membranes and serious collapse (Soll-mann, 1944). 

The leaves of Erythroxylon coca, the divine plant of the Incas, contain a local anesthetic and a psychostimulant. Erythroxylaceae is a very small family, represented by two genera, the more important of which is Erythroxylon. They are mostly tropical shrubs with entire leaves and 5-merous flowers, and the fruit is a 1-seeded, reddish drupe resembling that of dogwood. The anatomy of the plants of this family closely resembles that of the Linaceae. Of special interest is the development of papillae on the dorsal surface of the leaves. This is found in most species of Erythroxylon. 

Cocaina. Cocaine, Erythroxylon coca, Lamarck and other species are sources. An alkaloid is obtained from the leaves. 

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