What are the clinical presentations of chronic pancreatitis?

Abdominal pain (most common, occurs at beginning of the evolution and stops at the end, epigastric radiating to the back, may be associated with nausea and vomiting, and if severe causes loss of apetite) Steatorrhea (no lipase activity, occurs when pancreatic enzyme secretion is less than 10% max output, get diarrhea and weight loss+ fat-soluble vitamin deficiency (A,E and D) and maybe osteoporosis and osteopenia, also caused by celiac disease) DM (40-80% of pt, if we see pancreatic calcifications early onset and tail resection, less insulin -->give IV insulin)