my dad is 80 yrs old, for the last 10 years, he has suffered with dizzy spells when he bends over, or works under his car, weak, acid reflux, bloating stomch and swollen feet, His energy level is now at 0. Stress test and blood work reveal nothing. However, he definately has something going on. He is not one to go to the Doc and gets very frustrated at them not finding what is wrong. It hurts to see him continue to go down as he has always been very athletic, a boxer, a hard worker. It is wearing on him mentally as well. What tests do we need to ask for?