> but I attribute the latter to 4 different concussions and a mini stroke Ahh, ok. Well, that sounds like aphasia, then, slight aphasia, not word substitution that people who stutter do to avoid a word they cannot say easily. Also, you might have very mild neurogenic stuttering from the mini stroke or from the concussions. Neurogenic stuttering is a stutter caused by some kind of injury or illness to the brain or nervous system, which can happen at any time, unlike developmental stuttering which starts without injury or illness and usually in childhood. Both sound pretty mild, the possible aphasia, and the stuttering, though you are saying that both seem to be a little more lately? They could easily back off, from what you've described. Is it troubling you? (I had unexplained aphasia once. It only lasted maybe five minutes. But it was like with every third word, I would think one word and it would come out as a nonsensical sound only slightly related to the word.....it was very disturbing. Luckily it did not come back. Just saying, I can understand how it could be scary.)