Itchy ears--yep. I am really not sure yet what these are, {in my case} but they exhibit the qualities of both plant and animal. I have not seen them move, but the growth-rate is phenomenal. They could evolve, or transform into higher life-forms, but still waiting for results. I do know that both host cells and bacteria show signs of infection with this. There must be a spore, or something which is the starting point.
I have thought about the scalp thing, and it is possible that transfer happens at night through saliva---it would explain the ears as well. Shroom