I believe that I cantracted hairy cell leukemia when I was very sick in 2005 I had potasium drip in one arm and rehydration fluid on another arm and I felt I was on my death bed. My white blood cell count was very, very low. I had blood tests every 4 hours and I was getting so fatigued because of so much blood tests that it began to put a strain on my arteries around my heart. I used to feel very faint and very light headed. My memory started to fade and it has affeced me still a little bit but I am managing it. I will never forget evry time the potasium stores were building me back up when I would bleed it out of the rear end. I was in hospital for 4 months. The day I finally came out of hospital I was so tired and exhausted I had no energy what so ever.