Back to Ask the Diabetes Team Ask the Diabetes Team

From Fort Gibson, Oklahoma, USA:

A 17 year old female sustained a head injury last summer, then problems began to surface during the fall which led to her diagnosis of type 1 diabetes, but she has no family history of diabetes. The doctor was surprised at her diagnosis, considering the family history and her own good health history. Could a misdiagnosis occur between diabetes insipidus and diabetes mellitus? Could there be a connection between the head injury and the diagnosis?


I don't think there was a misdiagnosis. At 17 years of age, diabetes mellitus is mostly due to insulin deficiency. She probably has either type 1A (autoimmune) or type 1B diabetes mellitus. Type !A is the most common and is usually caused by a process in which the immune system mistakenly attacks and destroys the beta cells. It's an autoimmune process that can have with no symptoms (apparently good health) and occur suddenly at a very late stage just prior clinical onset. In 90% of the cases, there is no family history of diabetes.

Diabetes insipidus is characterized by hypotonic polyuria, but there is no sugar in the urine as is true for diabetes mellitus. It is due to the absence of vasopressin (hypothalamic, or central, diabetes insipidus) or lack of kidney response to vasopressin (nephrogenic diabetes insipidus). Trauma may be implicated in the etiology of central diabetes insipidus but not type 1 diabetes.


Original posting 13 Feb 2002
Posted to Diagnosis and Symptoms


  Back to Ask the Diabetes Team Return to the Top of This Page

Last Updated: Tuesday April 06, 2010 15:09:30
This Internet site provides information of a general nature and is designed for educational purposes only. If you have any concerns about your own health or the health of your child, you should always consult with a physician or other health care professional.

This site is published by T-1 Today, Inc. (d/b/a Children with Diabetes), a 501c3 not-for-profit organization, which is responsible for its contents. Our mission is to provide education and support to families living with type 1 diabetes.
By using this site, you agree to our Terms of Use, Legal Notice, and Privacy Policy.
© Children with Diabetes, Inc. 1995-2018. Comments and Feedback.