Bizzare Hillary behavior

Could this be why she is a bit weird as of late? She misspoke about landing under sniper fire in Bosnia many times and later retracted the statement by saying she was sleep deprived. But could it be more than sleep deprivation? She shakes her head abnormally on reporters, stares fiercely at bright colors, and she is constantly making mistakes reading a teleprompter. One health expert said that may be a sign of stroke.