What Causes Diarrhea And Anal Itching?

Hey Doc(s) About 10 months ago I started getting sick everyday, night, etc. I would have diarrhea all day, anywhere from 4 movements to 12 movements a day and had no idea why. I felt like there was a huge weight on my shoulder and felt depressed and I couldn t wake up , just a groggy feeling all day. I just thought I hated my job, in which I quit that job and the symptoms continued or worsened. I moved back to my home town, saw my doctor and he told me to not eat dairy (how can I form a dairy intolerance out of the blue I thought, but I listened) It somewhat helped for awhile and I was true and still true to this non-dairy diet but I am still getting sick everyday. It has gotten so bad that I have had hemorrhoids constantly, I feel week or dehydrated, and I am not really active as I once was, I don t want to move around. I ve lost about 20 pounds, I feel hot alot, my ears turn purple randomly and I feel like I am going to explode. To go along with the hemorrhoids, I itch in my anus, and can t really sleep a night which is probably why I am always tired. I randomly have chest pains, back pains and when I sit for too long my right side of my lower back hurts so bad I have to stand up and stretch and can t really move, it happens more frequently when I drive over 2 hours. I urinate frequently and sometimes it is painful. And lastly, I feel like I lose my mind or see things, I forget things, I am nice for a week and then mean the other week which is not me at all. What do you suggest?