Almost every person using insulin will have a low blood sugar reaction at some time. Low blood sugar, or hypoglycemia, happens quickly and needs to be treated right away.
With a low blood sugar level, you may have trouble doing simple things. It is important to know the signs of low blood sugar so you can treat it quickly. Your family, friends, teachers and sitters need to know the signs of low blood sugar, too. When they know what to look for, they may notice the signs before you do.