I have been having problems since 2008 i feel like i'm going to fall or faint, my arms,legs, head and back get numb and tingly,my body gets weak, have diarrhea and abdominal pain any ideas what it is?

Concerning symptoms: You have to be seen by a physician to sort some of this out. A common denominator could be the chronic diarrhea with associated dehydration. If you are experiencing the symptoms now, I recommend a visit to the ER. If not, an urgent virtual consult or visit with your primary doctor.

A long time sick!: You have had unpleasant symptoms for a very long time! What did the docs say? If you are using splenda (sucralose) or sorbitol (in gummy candies) that would be a possible cause of the abdominal pain and diarrhea. However we need to know much more before we can give you any idea. Consider a Healthap Prime consult with a doc. You can upload any test results there too. Otherwise see a doc.