Type 3c diabetes

Chronic pancreatitis is the most common cause. Because the pancreas also makes digestive enzymes and the hormone glucagon, many people with type 3c diabetes also have trouble digesting fat, and glucose levels can be harder to keep steady. Australian clinicians describe it as under-recognised, so it helps to tell your doctor about any past pancreas problems. Diagnosis uses pancreas-specific blood tests and imaging.

Treatment depends on how much pancreatic function remains. Some people manage with approaches similar to type 2 diabetes, while others need insulin as in type 1 diabetes, often alongside pancreatic enzyme replacement therapy and attention to nutrition, including fat-soluble vitamins. If you use insulin, do not stop it without advice, as missing it can lead to ketoacidosis. Yearly fasting glucose and HbA1c checks are suggested for people with pancreatitis, cystic fibrosis or haemochromatosis.