[Contribution to corticosteroid allergy].

Allergic contact dermatitis as a side effect of external corticosteroid application is very rare. About 100 cases have been published since 1959. Hypersensitivity is seldom directed to more than a single corticosteroid. This contribution reports on two cases showing sensitisation to externally applied corticosteroids in addition to other allergic reactions: the first case to Triamcinolone, Prednisolone and Hydrocortisone, the second one only to Triamcinolone.