Yes, according to my toxicologist, it is a common complication of mycotoxin poisoning. I just learned this today actually. I have been having weird thyroid symptoms for about 3 years, which started while I was living in toxic mold (stachybotrys & chaetomium) and they're getting worse. And I tested positive in March for Thyroid Peroxidase Auto-antibodies. I plan to have my toxicologist consult by phone with my endocrinologist to try to figure out the right treatment for me. The toxicologist says the way to treat it is as an immune reaction and not an autoimmune condition. (or at least that's how I understand what he said) I expect to know a lot more over the next few days as more test results come in and will try to post more then. But I wish you well in your efforts to work out any health problems you're experiencing from the toxic mold. It has caused me such horrific health problems: Acid reflux, vocal polyps, sleep apnea, memory loss, vertigo and other thyroid symptoms, just to name a few. This is bad stuff. Take care and be well!