Hi welcome to the site! I have this same condition during certain (My most severe)times of the year with my auto-immune peripheral neuropathy. I think it is called Dysphasia. It can be a symptom brought on by PN or can be caused be some medications. It is a very irritating symptom no matter where it comes from. Some of the more senior experts will probably come on answer more in depth - but I just wanted to let you know your not alone!