cerebral palsy side affects!

I'm doing a school asignment on cerebral palsy and I would like to know the side affects of Trihexyphenidyl. I would be extremly greatful if you could send some infromation on this drug or anything that you might know about cerebral palsy. If you can please contact me at the email address given. And if there is anything that you have questions on yourself I would be more than happy to provide you with infromation to the best of my knowledge.THANKS From Brandon Shellenbarger!