I am a 62 y.o. male with aplastic anemia . My hemoglobin drops to around 7.0 every three weeks and requires a blood transfusion. My question is ,when I go in a building where the a/c is usually set about 68 degrees , I have cold spells where I begin to shiver vigoursly as if I were in temperatures below freezing. I sometimes have to sit in these conditions for 5-8 hours. The following day I feel sickly, headache,nausea, exhausted etc. It usually clears within 24 hours. How much does the anemia cause this reaction.Thank You