I am partially paralyzed on the right side of my face due to a benign brain tumor on the 7th cranial nerve. I had decompression surgery in 1997. I complained of wrinkles and my injector, forgetting I was already partially paralyzed injected 2 units under my eyes and 2 units on both sides of chin to soften the wrinkles. Instead I am more paralyzed now and it is over 18 weeks. wearing off but very very slowly. Is this because the muscle is already paralyzed? Will the botox last longer than regular