Introduction:

Erythema nodosum is an acute nodular erythematous eruption usually limited to the extensor aspects of the lower legs. The most common causes are streptococcal infections in children and streptococcal infections and sarcoidosis in adults.

Case description:

Authors present a clinical case of a 33-year-old woman who attends the emergency department with polyarthralgia with one week of evolution, associated with painful erythematous nodules in the lower legs suggestive of erythema nodosum. It is described the whole study and follow-up performed in internal medicine appointment, identifying the etiology, desogestrel, and excluding other possible etiologies.

Comments:

The clinical case presented a favorable evolution, with complete resolution of symptoms and skin eruptions, after etiological study and therapeutic approach.

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