The pancreas is a gland behind the stomach that secretes digestive enzymes and hormones like insulin. Acute pancreatitis occurs when these enzymes become activated inside the pancreas, damaging the tissue. Risk factors include heavy alcohol use, gallstones, viral infections, medications, and genetics. Symptoms include severe abdominal pain radiating to the back along with nausea, vomiting, and fever. Treatment focuses on hospitalization, IV fluids, pain management, and sometimes surgery to remove damaged tissue.