I just noticed my Archery skill tree in the Skills menu is RED, and my skill in this is reduced to the base 15.

What does this mean? I had a look under active effects, and I don't appear to be poisoned. Dopes anyone know why this is?

You sure you don't have a disease? Check all of your active effects closely; it's kind of hard to notice sometimes.

Can't hurt to use a shrine either.

Tried using a shrine, still at minimum.

I can still use a perk to select an item on the skill tree that's 50+, but the bow damage rating is waaaay down.