I came across your post. Your symptoms sound very familiar to me.
Please review this web-site.
If you have, or you have associated with other people who have, practiced magic or things of the occult, then this could be your problem.
See this page...it is my web-site and contains almost all of your symptoms you listed above. I will not be returning here..
If you want to contact me, my email is on the home page of my web-site. God Bless...