Diabetes Emergency: What to Do When Blood Sugar Spikes or Crashes

When someone with diabetes faces a diabetes emergency, a life-threatening condition caused by dangerously high or low blood sugar levels. Also known as hypoglycemic or hyperglycemic crisis, it can strike without warning—especially if medication is missed, meals are skipped, or illness hits. This isn’t just about feeling shaky or tired. It’s about knowing when seconds matter.

A low blood sugar, a sudden drop in glucose that starves the brain of fuel. Also known as hypoglycemia, it often comes with sweating, confusion, trembling, or even seizures. If untreated, it can lead to unconsciousness. On the other end, high blood sugar, a dangerous buildup of glucose that can trigger dehydration and acid buildup in the blood. Also known as hyperglycemia, it’s the first sign of diabetic ketoacidosis, a severe complication where the body starts breaking down fat for energy, creating toxic ketones. Also known as DKA, it’s a medical emergency that needs IV fluids and insulin right away. These aren’t abstract risks—they happen to real people, often at home, at work, or while traveling.

What ties these together? Timing. Recognition. Action. You don’t need to be a doctor to help. Knowing the difference between a snack and a shot of glucagon can save a life. You’ll find real stories and clear steps in the posts below—from how to handle a sudden insulin reaction during a meeting, to spotting early signs of ketoacidosis before it’s too late. We cover what works in real life, not just in textbooks. Whether you’re managing diabetes yourself or caring for someone who does, this collection gives you the facts you need before the next crisis hits.