Any ideas what might be the problem with a laptop screen?

Kidsandliz went on a bit of a rant said
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I have a MacBook Air (13-inch, Mid 2013). I am thinking maybe the connection between the screen and the motherboard is loose? I get some horizontal temporary white lines (intermittently and in no way predictable) when I move the lid or touch the metal bezel around the screen in what seems like random places. Then today when I moved the lid a bit the entire screen acted like I had highlighted text in a word doc (eg turned that translucent blue color) except it happened to my entire screen. Then it goes away when I move the lid a bit more (I can make it happen reliably by moving the lid slightly).

It is hard to google this for potential solutions as when you put in translucent or highlighted blue screen it usually presumes blue and blank rather than just highlighted blue or some highlight box thing that people have trouble getting rid of… I can’t seem to find this particular problem. One I did find that seemed somewhat similar says upgrading software might fix it. That seems a bit odd to me as moving the lid affects the problem and that seems more like hardware to me.

Any ideas what might be screwed up? And how hard/how long it takes to fix? I am hoping I don’t have to leave it to get fixed because there is nothing like a 3+ hour drive (this is not highway driving - try mostly one lane each direction, no shoulder, farm equipment often on the road, etc., going through towns of 200 with speed traps (where it drops from 50mph to 25mph in the space of like 30’) to get to an apple store. I called apple support and they were no help - the girl I talked with said go ask in a store, no matter what I asked she said she had no idea, go ask at a store… Maybe she would have been more helpful if apple care hadn’t expired 2 years ago? Sigh.