Hand tremors, weakness, vision problems, fatigue, mood swings/depressed mood, stressed, dizziness, loss of balance trouble concentrating/ focusing?

You need evaluation: You need to be evaluated by a neurologist, a psychiatrist, an ophthalmologist, a gastroenterologist, and a psychologist for neuropsych testing. Yours is a very complicated case that will take a team of physicians or a very bright internist to diagnose. Please ask your general practitioner for referrals to the above specialties until a cause for all of your symptoms is identified.