I also have the same problem. They even sent me next to a faint and fall clinic at the Unversity of Utah hospital. They did the blood persure check from seating to standing. It would fall after standing for a min. I usually can make it about 12 to 20 steps and it hit. Sometime I have to seat down at once or if a bad one I have to lay right down on the floor. Then I can get up and start moving. I hate when it hit when I get out of the car. A few times I have to lay my upper body on the trunk of the car bad hope the legs will not give out.
In six and half years I have 3 rounds of cancer and each time it's a different cancer. Round one was chemo and radiation, round two was 2 inched of the right back jaw removed and rebuilt anf the last round was the front part of my tongue removed and a skin flap done. Plus now all limp nodes have been removed from my neck.