Why does Shakespeare uses hallucinations to create tension in Macbeth?

Shakespeare uses hallucinations in Macbeth to convey the psychological disintegration of the characters, particularly Macbeth himself. The hallucinations serve to blur the line between reality and illusion, adding a sense of unease and suspense to the play as the characters grApple with their inner demons and moral dilemmas. By showcasing the characters' fragile mental states, Shakespeare heightens the tension and drama of the unfolding events.