Headaches
Low blood sugar, both in the cases of reactive and non-reactive hypoglycemia, results in the occurrence of migraines or headaches. The frequent episodes of mild to severe headaches are mainly occurring due to the condition of hypoglycemia. Headaches on their own are not that harmful to the body, but they might result in making the brain numb, thus leading to the coma state of the brain. Coma or brain death is very rare to occur, but it might be possible if the headaches due to hypoglycemia persist for a longer duration.