Cause for concern?

My ferret is a 2 year old albino, neutered and descented. 
While giving him his bath today, I noticed a number of things that I don't know if I should be worried about or not. 
1. I noticed slight hair loss on his back, between his shoulderblades, which I don't know if it's normal hair loss with the season change, or something more serious

2. I found a deer tick embedded in his skin, which judging by the engorgement (or lack thereof) hadn't been there for more than a couple days. Are ferrets susceptible to lyme disease? I remember reading somewhere that lyme disease has a specific body temperature that it likes. Could ferrets' body temperature be too high for it?

Thanks in advance for the help!

Oops, forgot one more thing:

I also noticed one of his eyes (the left one) was cloudy, as you would expect to see with cataracts, but 2 years old seems a bit young to be developing cataracts. Any other ideas as to what it could be, and should I be concerned?

Ferrets can get lyme disease.  This is an older article written by a lady who runs a shelter in IL.
http://weaselwords.com/ferret-articles/ferrets-and-lyme-disease/
On my ferrets, their fur seems to be thinnest on their shoulders.  Watch for bare spots.
2 does seem young for cataracts.  That's one you may want to talk to your vet about.

THE DOOKS OF HAZARD