LAUSR

A 55-year-old male with a history of untreated hepatitis C infection, chronic liver disease, and porphyria cutanea tarda (PCT) was seen for scarring alopecia on the scalp that evolved over a period of a year (figure 1A). Uroporphyrin I levels were elevated (1,050 μg/24h; normal <150) and skin biopsy showed scleroderma-like changes (figure 1B). Autoantibodies were negative and no other systemic symptoms were present.What is your diagnosis?Alopecia porphyrinicaAlthough cutaneous sclerosis is most [...]