Published: 10 January 2022
Author(s): Bruna Crea, Fabrizio Elia, Giulia Cavalot
Issue: April 2022
Section: Internal Medicine Flashcard

A 17-years-old woman with type 1 diabetes mellitus known since the age of 9 was admitted in the high-dependency unit for diabetic ketoacidosis. She had a history of poor glycemic control and many previous hospitalizations. Two years earlier, she reported the appearance of a red-brown, telangiectatic and hyperpigmented patch, localized in the pretibial skin of her left leg (Fig. 1). The lesion was well-circumscribed with erythema at the periphery. Two months before a spontaneous ulceration appeared in the middle of the lesion, apparently without any trauma.

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