Hi ! I am very new here and do not know you as yet. But this mental thickness you talk about and mom has it too. Can I ask how old you and mom are? I have it real bad somedays to the point people think I am really really drunk ( and these are family members who are just plain ignorant) I have MS, very slow progression of it with lesions on my brain. Can I ask also where you live and if mom has seen a neurologist at all? Sorry you don't have to answer but these can be important clues. MS is dx'd in lots of northern climates, much more prevalent for some reason, they are also finding that it can affect family members also, but that is not a definite yet. I understand the thick feeling all too well please let me know how you do? Linda <font color="black"> </font>