Pathogenesis
This condition is an unusual complication of diabetes and not necessarily related to other vascular complications that may occur in a diabetic patient.
The pathogenesis is believed to be small-vessel damage.
Histological features include partial necrosis of dermal collagen and connective tissue. Also there is a histiocytic cellular response.
This condition occurs more often in females. It usually affects young adults or middle-aged patients.
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