My teenage daughter started suffering mental illness; severe anxiety, auditory and tactile hallucinations, and worse. She had it for 7 months straight with no meds working. I got her FMT and by the second week it was waning and by the third week her symptoms ceased and have not returned. It's been 4 months. It was nothing short of a miracle. I believe she had PANS (pediatric auto-immune neuro-psychiatric syndrome). I have not heard of anyone treating PANS this way but my gut (no pun intended) told me to try it.