Why is my nasal flap so dry?

I had a nasal septum perforation repair in May 2015 an ever sicne then I have been nothing but miserable!! It's completely dry n unbearable an it seems like my ENTS won't do anything or listen to me n won't give me much answers!! All their saying is tgst its from my nerves of my nose may not be fully developed??!! Please help me I'm tired of living in misery. I wish I never would of agreed to surgery I was better off with just the hole in my septum. Seems like my problems have gotten worse

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