Is it common to for an Xtacy addict to have a bad stuttering problem?

Unfortunately I know of someone that caused me to read up more on this addiction. I know it's supposed to give an initial "rush feeling" and I wanted to know if this contributes to a possible stuttering problem. I don't know what all is involved in the drug but I found an article saying that certain drugs may cause cerebral problems linked to stuttering and I want to know if it is in XTC? I noticed the person had times when his speech was incomprehensible compared to others.