My OLP wasn’t caused by any autoimmune disorders.. they couldn’t figure out what was causing it. I’ve been checked several times for lupus, hepatitis, Sjögren’s syndrome, etc. I’m not diabetic.. they kept wanting to figure out what caused it. It was all whitening toothpastes for me.. different brands; if the tube says whitening.. it irritated it further. In almost 3 years my OLP never completely healed.. felt better, looked better, but always had sores inside my cheeks. .. I stopped with ALL whitening toothpaste brands and the sores have healed. For the last week, I’ve been eating things I couldn’t eat for pain before.. pizza, spaghetti , etc.. the many doctors didn’t ask about my OLP anymore; they just looked in my mouth , cheeks ( some didn’t look at all). If they couldn’t figure out what was causing it, they should’ve referred me to someone who possibly could. Thank God I read and try things myself or I’d probably NEVER have gotten rid of it. Like I said; my OLP wasn’t from an autoimmune issue.. it was solely caused by the whitening toothpastes. I hope this helps someone.