They did some foreshadowing a few episodes ago (seemingly) alluding that biting wasn't the only cause or something like that. I just scanned the episodes this year but couldn't find it. I'd probably have to watch them again to find it. About to watch the new episode. I'm one of those people that doesn't mind reading/hearing spoilers, I'm still going to watch/read something to get my take on it.
Southern Colorado Curly
Mix of 2s med-low porosity, med-fine texture, lots of hair