It was a sad day when they told me I couldn't donate any more
I was a regular blood donor for over 20 years, starting while I was still in high school. About 7 years ago, they told me I couldn't donate any more because I have psoriasis, a chronic but mostly annoying skin disease. They tell me that donating blood makes my condition worse but I never noticed it. I did notice becoming much more light-headed after donating blood than in the past but I attributed that more to age and altitude. Perhaps there was a link between psoriasis and the effects of blood donation but I just don't know.