Rembrandt: Self Portrait at the Age of 63, 1669 (oil on canvas) National Gallery, London—The subtle faint red spots on his cheeks and blotchy telangectasis under his right eye indicate rosacea
Hogarth: Marriage A-la-Mode, about 1743-1745 (oil on canvas) National Gallery, London—Syphilis, in particular gummatous sores covered by black beauty spots
Bronzino: An Allegory with Venus and [...]