Diabetes Home > Signs of Diabetes

Constant hunger, weight loss, and blurred vision are possible diabetes signs. In the case of type 1 diabetes, symptoms can develop relatively quickly, although beta cell destruction can begin much earlier. For people with type 2 diabetes, indications usually appear more gradually. In many cases, women with gestational diabetes have no signs.

Signs of Type 1 Diabetes

Type 1 diabetes signs usually develop over a short period of time, although beta cell destruction can begin months -- even years -- earlier.
Common classic signs include:
  • Constant hunger
  • Weight loss
  • Blurred vision
  • Increased thirst and urination
  • Extreme fatigue.
It's vital that type 1 diabetes be properly diagnosed and treated; otherwise, a person may lapse into a life-threatening coma, known as diabetic ketoacidosis, or DKA.
Often, children with type 1 diabetes will exhibit vomiting, and mistakenly be diagnosed as having gastroenteritis. Type 1 diabetes can be differentiated from a gastrointestinal (GI) infection by the frequent urination that accompanies the continued vomiting. If the vomiting were caused by a GI infection, there would likely be decreased urination due to dehydration.

Type 2 Diabetes Signs

Many people show no signals of type 2 diabetes. Signs can also be so mild that you might not even notice them. More than 5 million people in the United States do not know they have type 2 diabetes.
If you do have symptoms, they might include the following:
  • Increased thirst
  • Increased hunger
  • Weight loss
  • Fatigue
  • Increased urination, especially at night
  • Blurry vision
  • Sores that do not heal.
Sometimes, people have signs of diabetes but do not suspect they have the disease. They delay scheduling a checkup because they do not feel sick. Many people do not find out they have the disease until they suffer from diabetes complications, such as blurry vision or heart trouble. It is important to find out early if you have diabetes because treatment can prevent damage to the body resulting from the condition.
Written by/reviewed by:
Last reviewed by: Arthur Schoenstadt, MD
Last updated/reviewed:
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