Brittle diabetes characterised by recurrent hypoglycaemia.

Area of Science:

• Endocrinology
• Metabolic Disorders
• Clinical Medicine

Background:

• Limited data exists on the clinical profiles of "brittle" Type 1 diabetes patients experiencing predominantly hypoglycemic instability.
• Brittle diabetes is characterized by unpredictable glycemic fluctuations, leading to significant patient distress and healthcare utilization.

Purpose of the Study:

• To delineate the clinical characteristics of brittle Type 1 diabetes patients with a primary presentation of recurrent hypoglycemia.
• To compare the demographic and etiological factors of hypoglycemic brittle diabetes with those of brittle diabetes presenting with recurrent diabetic ketoacidosis (DKA).

Main Methods:

• Analysis of a cohort of 381 brittle diabetic patients from the United Kingdom.
• Categorization of patients into groups based on predominant instability: hypoglycemia, DKA, or mixed.
• Comparison of age, sex distribution, and reported underlying causes between the groups.

Main Results:

• Approximately 17% of brittle diabetic patients experienced recurrent hypoglycemia requiring hospital admission.
• Patients with hypoglycemic instability were older (mean age 34 vs. 22 years) and had a more even sex distribution compared to DKA patients.
• Psychosocial factors were frequently cited as underlying causes for hypoglycemic brittle diabetes, alongside organic factors like impaired hypoglycemia awareness and alcohol use.

Conclusions:

• Hypoglycemic brittle diabetes represents a distinct and significant subgroup within the broader brittle diabetes syndrome.
• This subgroup exhibits unique age and sex demographics compared to the more prevalent DKA-related brittle diabetes.
• Understanding these differences is crucial for targeted management strategies in brittle Type 1 diabetes.