Lipitor and moderation

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I am currently taking a 40mg lipotor. I have devloped chronic hives mosttly on my arms and thighs. The itchng is so bad that I scratch these welts in my sleep. I have been on Plavix 75 mg since my first cardio-chatherization which has made my blood so thin that I actually bleed when I scratch. I'm now in a itch and scratch cycle that keeps me from sleeping. My doctor originally started me on 10 mg. This was before I started having clogged coronary arteries'. I am 74 years old. I have just had my second bypass operation. I started on lipitor 10 mg about eight years ago. I developed a hive like welt in my groin area. This welt or hive itched so bad that I damaged the skin. I went to a dermatoligist and the only answer he had after a biopsy was that it was probably Lichon Planus. I had a triple pass July 18 2007. That is when my doctor increased my lipitor dosage to 40 mg. He had increased it to 20 mg several years. I finally realized that it may be the 40 mg dose that causes me to wake about three hours later with Hives and itching that is so bad that even scratching doesen't relieve the itch.
I have seen two dermotoligsts. They can find nothing that I am allergic to. This condition has gotten progressivly worse over the last three years. I am taking Zanix and Benedryl I have eliminated all of my other medicines as the cause.
The only thing I could see as a possible cause is acute anxiety. After seeing my family doctor he prescribed the Zanix.

My last hope for relief is to get off Lipitor. I stopped taking it two days ago
and I already see a change in this chronic hive condition; I am assuming that it may take a while to see if I have solved my problem.
Incidently I started takng Zocor about three years ago instead of the Lipitor and I had such severe neck and shoulder pain that it was obvious Zocor was the cause.

zocor was the cause