Chronic pancreatitis progresses through four stages. In the early stage, symptoms are often mild or absent, with occasional bouts of pain and inflammation. As the condition advances to the acute relapsing stage, pain becomes more frequent, and episodes of inflammation occur regularly. In the chronic stage, persistent inflammation leads to irreversible damage to the pancreas, resulting in digestive and metabolic problems such as malabsorption and diabetes. Finally, in the late stage, advanced pancreatic damage causes significant loss of function, chronic pain, and serious complications like pancreatic insufficiency or pancreatic cancer.