I've had lichen planus problems (finially figured out what the blisters in my mouth were through a biopsy), that were related to a chronic candida problem. I haven't had any symptoms since going to a yeast-free diet (starting with taking the "one-time" pill Diflucan every day for 2 1/2 months). Dr. Crook's book "The Yeast Connection" was a great help to me. I had a yeast infection problem for 25 years, and now I just had surgery for thyroid cancer (all of my thryoid and 8 lymph nodes removed). Reading these postings is making me wonder if it's all related.