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What's your diagnosis?

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Subcutaneous fat necrosis of the newborn. This is a self-resolving and benign condition that is seen in healthy newborns. The etiology of this disorder is probably ischemic injury to subcutaneous fat. Lesions often develop at sites of pressure.

Source: Prose NS, Kristal L. Weinberg's Color Atlas of Pediatric Dermatology, 5e; 2017. 

Leah Carton

Associate Editor - Pediatrics, Dermatology, Geriatrics , McGraw Hill