 [ Symptoms ] can a panic attackhyperventialing cause blood sugar to rise  my son had his glucose test for cf yesterday and while he was waiting for the 2 hour results he had a panic attack and began sobbing uncontrollably and hyerventilating because he was hungry and realized he could not eat for 2 hours the clinic messed up and they had to put off his initial drinking of the glucose for 3 hours after he had already been there anyway his fasting glucose was 86 his a1c was 5 2 but when they did his post fasting it was 206 [ Disease ] i cannot find anything linking panic attacks to high blood sugars it seems plausible that increases in stress hormones during a panic attack could temporarily increase blood sugars your son is a1c and fasting glucose are normal so the high blood sugars are not caused by diabetes