For example, Dr. Shasa Hu frequently sees cases of seborrheic dermatitis, which manifests as flaky dandruff and scaly red patches ... on with your skin, here are some skin rash pictures.

But according to dermatologist Kathleen Suozzi from the Yale School of Medicine, the barnacle-looking patch of skin on Trump's face is probably not a sun spot, and it likely has nothing to do with ...