A scarred face in a dream often centers on self-image and how visible your past trauma feels to others, even when it really isn't. Noticing the scar with acceptance can reflect an identity that's integrated its own history, while hiding it often points to shame about a past you haven't fully made peace with.
If the ascendant be fortunate, and the lord thereof unfortunate, it indicates a sound and healthful body, but an afflicted mind. But if the contrary happen, judge the contrary. - William Lilly (1602.-1681.)