Jim Carrey has dealt with ADHD all his life. It has diffidently contributed to his carer as a comedian. I do think that he has taken medication for it because of the websites that i have seen but it cannot be confirmed. Today I dont think he would have been treated diffrently and the same as back then because ADHD is not a bad disorder especially going into a carer as a comedian. Having ADHD is not a bad thing i think it is bad if you need to focus but for anything else like sports it can only benefit you.