What causes frequent blacking out with a history of anemia?
Patient: I am 13 and have had anemia since I was 4 years old and lately if I stand up I just collapse to the ground because my vision blacks out and I get so lightheaded and can't catch my breath I lay there for a few seconds then get up and feel in shock. Why does this happen? Doctor: Hi, dearI have gone through your question. I can understand your concern. weaknesses, blackout, difficulties in breathing are common in anemia.  Because your oxygen carring capacity os reduced.  You should go for complete blood count, peripheral smear examination and anemia profile.  Find out the cause of anemia and take treatment accordingly. As your hb level improve you will get releif from your symptoms. Hope I have answered your question, if you have doubt then I will be happy to answer. Thanks for using health care magic. Wish you a very good health. Don't forget to click thank you.