Multicenter Study of Fulminant Type 1 Diabetes in China

This study is collecting data from patients in China with a rare and severe form of type 1 diabetes called fulminant type 1 diabetes, where the pancreas fails very suddenly and completely. Researchers are building a registry to better understand this condition and compare it to healthy individuals. **You may be eligible if...** - You have been diagnosed with fulminant type 1 diabetes, defined by sudden high blood sugar, very low insulin production, and diabetic ketoacidosis shortly after symptoms began - Healthy volunteers are also recruited as a comparison group if they have normal blood sugar on testing **You may NOT be eligible if...** - You were already diagnosed with diabetes before this episode Talk to your doctor to see if this trial is right for you.