Erythema nodosum and oral contraceptives. (Letter)

A case of erythema nodosum in a 26-year-old woman who took Minilyn for 3 years is reported. The occurrence of erythema nodosum corresponded to the periods of use and discontinuation of Minilyn; it was assumed that Minilyn was responsible for the condition. After a challenge with 4 unknown types of pills 1 of which was Minilyn the erythema nodosum did not recur. It is possible that desensitization to Minilyn had occurred in the meantime.