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Case
An 80-year-old man woke up with a localized area of erythema on his forehead. He didn’t think much of it, until the lesion slowly became white and then started turning blue over a few hours. He says that the lesion is painful and is getting larger and darker. He denies the presence of headaches, muscle pain, abdominal pain, sweating, and tremors.
Clinical Challenge: January, 2015
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