I had itching from the inside out and started scratching. I originally had it near my belly button (yeast). It continued to itch and was on my abs, waist, back, arms and thigh tops. I went to see a Derm and she prescribed Ivermectin 3 mg with Prednisone 10mg. My itching has lessened a lot but my back still itches. I can t think of having scabbies, and she noted an allergic reaction to shampoo. What are your thoughts? Could yeast be the culprit? Thanks!