OP, first of all, sorry to hear about your situation. Most of us with 3+ years (I have over 20) have had these situations come up.
My suggestion to you is to endure it if you like the company you are working for and, and you like your territory, and you are satisfied with the compensation...the reason is that this piece of crap will not always be your manager, as these pukes come and go in a territory.
However, if you are not happy with your situation, then I would update the resume and start looking.
Call in sick more. Use up the vacation. Get on interviews. You will have a lot of options with your track record.
Whatever you do, keep your words few with your manager and your co-workers. You can't trust anyone, especially HR.
