[Investigation of the allergens of colophony and its derivatives used in the manufacture of sticking-plasters (author's transl)].

Colophony and its derivatives play an important part in intolerances to sticking-plasters. Gas chromatography revealed resinic acids (derivatives) in numerous products of that kind, even in the so-called "hypoallergic" ones. The profiles of the resinic acids contained in some sticking-plasters that are sold in several countries under identic names, are rather different. The results of physicochemical analysis of Elastoplaste, the normal French product, and of a "hypoallergic" product, coincide with the results of allergologic studies.