Yusuf Anwar

An 89-year-old woman is seen for an erosion on the frontal area of the scalp. History is positive for actinic keratosis. What's your Dx?

The 89-year-old has used topical mupirocin twice daily for several weeks without improvement. Examine the images. What's your diagnosis?

The patient says the incidental finding appeared in adulthood and has been stable for years. Can you identify this reticulated erythema?

You might not think of sarcoidosis in this patient’s case, but that’s the point. Here: teaching points about a disease not to be missed.