During a routine skin cancer screening, a 76-year-old man asked for a second opinion about a rash on his trunk, upper extremities, and back. The rash had been present for the past 25 years, ever since he returned from a mission to Africa while in the Special Forces. He stated that the rash became more pruritic, swollen, and painful with perspiration during exercise or when his skin was overly dry. A previous provider prescribed “some sort of medication” that required liver function tests 4…
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