Macbook display light patch

In the bottom right corner of my screen there is this irregularly shaped patch of screen that is brighter than the rest. Around it is a "halo" of darker screen. Is there anyone else out there who has had this problem or knows how to fix it?
Thanks

Did you try what I suggested? If so, there are other things you can try:
Reset the NVRAM: restart your mac, and as soon as it goes off press and hold down these four keys: Command (Apple key), Option, P, R. Hold them down until you hear the startup chime four times, then release the keys and let the machine continue booting.
Reset the Power Management Unit (PMU): shut down the Mac, disconnect AC power, remove the battery, press and hold the power button for 5 seconds. Put battery back in, reconnect AC power and then restart your Mac.
You can also try changing your display to a different resolution and then changing back to your original setting.

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