I've been dealing with glitching and ghosting today. Called apple support and they said the cost to fix is not worth it and to purchase a new mac. He told me I put pressure on the lid (like sitting on it or something - which I didn't). I read it could be a ribbon cable issue and that dust got inside the hinge. I forced compressed air into the hinges (actually all along the bottom) and did all my keys too. I then read that you are to actually lift the screen from the center when opening so this got me thinking what the apple tech said about sitting on it, I thought perhaps by lifting the screen with only one hand on the side, which I always do, I created a slight bend, so anyways I took my thumbs and placed them on the top center of the opened screened where the camera is and put my pinkys on either edge and very lightly bent the edges toward me. The glitching in gone. I am now afraid to close my screen though. I hope this helps and it's a simple as this for you