igg4 pancreatitis, formally known as igg4-associated pancreatitis, is a kind of autoimmune pancreatitis, and its early symptoms include abdominal pain, jaundice, nausea and vomiting. 1. Abdominal pain: this is the main symptom of the disease, often occurring after eating, abdominal pain is severe, mostly located in the left upper abdomen, when serious, it can be radiated to the left shoulder and left waist back, the lesion involves the whole pancreas, the pain range is larger. 2. Jaundice: if the enlarged pancreatic head presses the common bile duct, causing bile duct involvement, obstructive jaundice will occur, i.e. the patient’s skin and sclera are yellow. 3. Nausea and vomiting: in the early stage, vomiting is often severe and frequent, and the abdominal pain will not be relieved after vomiting. If there are similar symptoms, it is recommended to consult a doctor and take medication under the guidance of a professional doctor, so as to avoid delaying the condition.