Woman has reticulated, hyperpigmented patches on back. Let’s diagnose.

A 38-year-old woman visited her doctor for discoloration that had developed on her trunk 2 months prior. On examination, extensive hyperpigmented, reticulated patches were seen on her back. She had no recent history of sunburn, extensive sun exposure, or history of dermatological conditions.

Additional history revealed the use of a heating pad for the preceding 3 months to help manage her chronic back pain. She often rested on the electric heating pad for several hours and sometimes fell asleep with the heating pad on.

What’s the diagnosis?

Use the Differential Builder in VisualDx to help you.

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