Symptoms and Signs of Diabetes in Kids

For many years, the most common type of diabetes in children has been Type 1. Type 1 diabetes is an autoimmune disease in which the body’s own immune system damages the cells in the pancreas that manufacture insulin, which is the hormone that controls blood glucose levels. Type 1 used to be called juvenile-onset diabetes, as it often begins in childhood. Children with Type 1 are insulin-dependent. Without it, too much sugar stays in the blood.

Contact the Pediatric Endocrinology and Diabetes Center

Contact the Pediatric Endocrinology and Diabetes Center

For more information or to schedule an appointment, please call 401-444-5504.

111 Plain Street, Providence, RI 02903.

Type 2 diabetes was previously referred to as adult-onset diabetes, but it is becoming more common in adolescents with the rise in childhood obesity. With this type of diabetes, the pancreas produces some insulin, but does not make or use it well. Type 2 is typically non-insulin-dependent and can be managed with nutrition, exercise, and lifestyle changes. Unfortunately, Type 2 tends to progress and diabetes medications are often needed.

How do I know if my child is developing diabetes?

To know if your child might be developing diabetes, watch for signs such as frequent urination, excessive thirst, bed-wetting, increased hunger, tiredness, blurry vision, and weight loss. 

If left untreated, diabetes can lead to serious health problems, such as damage to internal organs and low blood sugar. If your child starts dealing with exhaustion, vomiting, belly pain, quick breathing , or loss of consciousness, this could be a sign of a dangerous condition called diabetic ketoacidosis (DKA). You may need to get medical help right away.

How long can a child have diabetes without knowing?

A child can have diabetes without knowing. In the early stages, they might not show any symptoms. Doctors can test for five autoantibodies – proteins that attack your body’s healthy cells – in the blood to catch diabetes early. In Stage 1, a child might have two positive antibodies but still have normal blood sugar and no symptoms. In Stage 2, they may have two positive antibodies and abnormal blood sugar, but still no signs. Stage 3 is when symptoms appear. A diagnosis is usually made in this stage.

How is Type 1 diabetes different from Type 2 diabetes in kids?

Insulin is a hormone that helps control the amount of sugar, or glucose, in your blood. In Type 1 diabetes, the body doesn’t make any insulin at all, so people need to get insulin from outside sources, like injections or a pump. In Type 2 diabetes, the body still produces insulin, but it doesn’t use it effectively, leading to elevated blood sugar levels. 

Type 1 diabetes is more common in children, while Type 2 is usually seen in adults. Both types can have similar symptoms, but Type 2 is more often linked to factors like obesity or family history. Changing diet or lifestyle can sometimes help reduce the risk of Type 2 diabetes.

At what age can a child develop diabetes?

Type 1 diabetes can be developed as early as 8 months, but it most appears between four and six years old or between 10 and 14 years old.

Can childhood diabetes be prevented?

Type 1 diabetes cannot be entirely prevented. However, there are programs that allow individuals with a family history of Type 1 or without a family history of Type 1 to get tested. Researchers also are exploring ways to delay the onset of diabetes. For children aged eight and older who are in Stage 2 of Type 1 diabetes—characterized by abnormal blood sugar levels and the presence of two or more diabetes-related antibodies—a medication called TZIELD (teplizumab) has been shown to delay the progression to a full diagnosis by an average of two years.

How does childhood diabetes affect daily life?

Childhood diabetes, or Type 1 diabetes, is a condition that lasts for a lifetime and has no cure. It requires daily attention, like checking blood sugar levels, taking insulin, and managing what a child eats. This can be tough for both the child and their family to manage, so it is important to find support when needed. With proper treatment and a healthy lifestyle, a child with diabetes can live a happy and fulfilling life.

When should I see a doctor about potential diabetes symptoms in my child?

Consult your doctor if your child has excessive urination, drinking, and hunger, and is not gaining or losing weight. If your child has these symptoms and their random blood glucose is more than 200 mg/dl or their HbA1c is 6.5% or more, they need to see a diabetes specialist urgently.

Young girl walking with parent

Straight Talk About Kids and Diabetes

Diabetes is a common disease, but is often misunderstood. As diabetes can impact anyone at any age, it is important to understand more about the condition.

Brothers playing

One Brother Helps Another

A study helped doctors identify antibodies predictive of Type 1 diabetes in Henry Cross, age seven. His brother, Frank, age five, had already been diagnosed with the disease.

Diagnosing Diabetes in Kids

A health care professional can diagnose diabetes through blood tests that will show your blood glucose levels. If levels are too high, it is an indicator of diabetes. Type 2 in young people is most often diagnosed around the time of puberty, because insulin resistance normally increases at this time.

Diabetes can be discovered through routine checkups, where elevated blood sugar levels indicate diabetes, even without other signs and symptoms. Lab testing can also confirm a diabetes diagnosis; there are a few types of tests, including:

  • Fasting plasma glucose (FPG) test - This test measures your blood glucose level at a single point in time. This is usually administered in the morning after fasting for eight hours.
  • A1C tests - Provides your average levels of glucose over the past three months. Fasting is not necessary for A1C tests. The results come in the form of a percentage, which indicates your average blood glucose levels.
  • Oral glucose tolerance test (OGTT) - This is a two hour test also administered after fasting for ten hours. A clinician will draw a blood sample to test glucose levels, after which the child drinks all of a high sugar drink within five minutes. After two hours, a second blood sample is drawn and tested. The results of each will indicate a diabetes diagnosis.
  • Random plasma glucose (RPG) test - The primary screening for Type 1 diabetes, a blood sample is taken at a random time.
DiagnosisA1CFPGOGTTRPG
NormalBelow 5.7%99 or below139 or below 
Prediabetes5.7-6.4%100-125140-199 
Diabetes6.5% or above126 or above200 or above200 or above

Learn more about Brown University Health's Pediatric Endocrinology and Diabetes Center