Brad Pitt: 'The Dark Side of the Sun' (1988)
Pitt had a few uncredited roles to his name — like in Charlie Sheen's "No Man's Land" — before landing his first credited role in the American-Yugoslavian drama "The Dark Side of the Sun."
Pitt plays Rick, who has a rare skin disease that prevents him from exposing himself to any kind of light, especially sunlight. The full movie is on YouTube if you decide to check out how that insane description is portrayed on screen.