Salmonella gastroenteritis--another cause of erythema nodosum.

Although there are many causes and associations of erythema nodosum, it remains a useful sign often giving a clue to the diagnosis of a puzzling illness. It is therefore important for clinicians to be aware of all the possible causes and associations. The following report is of a patient in whom typical erythema nodosum developed during the course of severe salmonella gastroenteritis.