... breathingsores in the mouth, throat, or rectumsweatingswelling of the hands and feetthirsttinnitus (ringing in the ears)unexplained bleeding or bruisingpica (a craving to ... normal hemoglobin as it needs. Thereare two categories of thalassemia, depending onwhich of the amino acid chains is affected. (Hemo-globin is composed of four chains of amino acids.) In alpha-thalassemia, ... attack.Prevention In most cases, the best prevention involves chang-ing habits to avoid bringing on attacks of angina. Aheart-healthy lifestyle includes eating right, exercisingregularly, maintaining an...