Insulin Dependent Diabetes Mellitus (IDDM) -- Can't control blood glucose without insulin.
Juvenile Diabetes Mellitus -- Refers only to the age when it occurs, as opposed to Adult Diabetes or type 2. Most Juvenile Diabetics are considered to be type 1.
Type I Diabetes Mellitus -- Older terminology of Type 1.
Type 1 Diabetes Mellitus -- Refers to diabetes where the C-Peptide value was negative or of low value (No or low Beta cell function -- requiring insulin) differentiating them from C-Peptide positive, which confirms type 2 diabetes.
These four terms have different definitions, which are important, in order to understand how they are viewed. I have throughout my life been termed by each one of these. They all have come to mean the same thing now.However, the first two are more vague.Because these definitions with different meanings have been lumped together and interpreted to mean the same thing it has lead to more confusion and hiding of the truth. Type 1 means that a C-Peptide test was performed and the conclusion was that there is low or no beta cell function, therefore, requiring insulin. < PREVHOMENEXT >