• usually occurs in children, but can happen at any age

  • usually comes on very suddenly

  • requires insulin shots, or an insulin pump, because the body cannot make insulin

  • is thought to be caused by genes and other environmental factors (such as a virus)

  • accounts for only 5 to 10% of people with diabetes

Symptoms of Type 1 Diabetes

Here are some of the signs and symptoms of type 1 diabetes:

  • being very thirsty or very hungry

  • having unexplained weight loss

  • having trouble concentrating

  • feeling tired most of the time

  • urinating a lot (or bedwetting in children who have been toilet trained)

  • having blurry vision

  • cuts or bruises that heal very slowly

Nausea, vomiting, or stomach pains may also be present in people with undiagnosed type 1 diabetes. If you have any symptoms, ask your doctor or health care provider to check your blood sugar (glucose) to see if you have diabetes.


  • Easy Eating for Busy People

  • Diabetes and Your Feet

  • Diabetes Can Harm Your Vision

  • Know Your Blood Sugar Numbers

  • Diabetes: Are You at Risk?

  • Diabetes Can Increase Your Risk for Heart Attack and Stroke

Fact Sheets

  • What is Diabetes?

  • Do I Have Diabetes?

  • I Have Diabetes. What Can I Do to Stay Healthy?

  • Low Blood Sugar, High Blood Sugar, and Sick Days

  • Tips to Help You Feel Better and Stay Healthy

  • What is the A1C Test?

These materials are available from the Massachusetts Health Promotion Clearinghouse at www.maclearinghouse.com/category/DIAB.html.

This information is provided by Diabetes Prevention and Control Program within the Department of Public Health.