Trying to draw blood on an 8 year old and he goes into panic mode. During his anxiety his skin turns bright red and eyes are bloodshot, he starts scratching like crazy. Also started to hyperventilate. Could this be from a sudden rise in blood pressure? What can we do to make this a less stressful event. A few years ago it took 3 people and 4 hours to finally get it done. We tried today and were told we should go home, they couldn t do anything for us. He is going through the testing for ASD, OCD, ODD, Tourette s, Aspberger s, mood disorder. Thanks for your help.