| Typical clinical course |
Usually rapid onset; symptoms are present for a few weeks to one month. |
Usually slower or more subtle onset; symptoms are present for many months. |
| Weight |
Primarily lean, although as more children become overweight, increasing numbers of children with type 1 are overweight at diagnosis. |
Almost all of the children with type 2 are overweight or obese. |
| Diabetes ketoacidosis(DKA) is diagnosed when a child has ketones in the urine and blood, and is dehydrated and sick. It usually requires hospitalization and the administration of fluids and insulin by vein. |
This occurs in about 35%-40% of children at the time of diagnosis of type 1 |
A very mild form is found in some children with type 2. It has been reported to occur in type 2 in about 15% of cases at diagnosis. |
| Family history |
Only 5% have a relative with type 1 diabetes.
Up to 20% may have a relative with type 2 diabetes.
2 |
Almost all will have at least one relative with type 2. |
| Other conditions in addition to diabetes |
Several autoimmune diseases such as thyroid and/or adrenal disorders, vitiligo (loss of pigmentation of the skin) and celiac disease are seen in children with type 1 at a higher rate than the general population. Autoimmune disorders may also run in family members |
Polycystic ovary syndrome. Acanthosis nigricans. (90%) High Blood Pressure. Other obesity-related conditions.
|
| C-peptide - this indicates insulin is being made in the pancreas |
Can be preserved at diagnosis when a few cells still persist and can manufacture insulin. |
Always present, which indicates that not all insulin producing cells have been destroyed |
| Presence of islet auto-antibodies |
Although this is the hallmark of type 1, only 85% of those felt to have type 1 have antibodies |
Although this is the hallmark of type 1, 15% of those presenting with what looks like type 2 diabetes have antibodies. |