Hyperpigmented patch of skin on neck
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A 56-year-old woman with a history of celiac disease visited her doctor after a number of firm, smooth plaques developed over the course of a couple of weeks. They started out as yellow/pink and changed to a red color and became painful and pruritic. She noted that the lesions seemed smaller in the morning and increased in size during the day. She was also experiencing joint pain. |
What's your diagnosis?
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