I have many fainting spells to where iam walking and then I just fall flat on my back, the doctors didnt know why. Then they found out I wasnt getting enough oxygeon to my brain, I was then diagnosed with sarcoidosis in the lung and liver so they are like tumors in the lungs and liver. With it in the liver it was keeping my oxygeon low so now I have an oxygeon tank. But I get dizzy spells to but no one knows the answer to that.