Question the First:
Have there been accounts of someone dreaming of practically invisible symptoms of an illness, and it turns out they have it?

Question the Second:
Does anyone know of an illness or poisoning/contaminant that in large doses causes tissue damage in a specific pattern, as described below:
-six holes close together that end up looking like a circle with six axles or three crossbars, or
-holes in the tissue that have six extensions from the edge to the center?
Think using a holepunch on a piece of sushi, then using six pieces of fish bone to make "spokes" like a wheel, then shrinking the whole thing down to where you would need a microscope to see clearly.