I've had pancreastitis and I've had.moderate pancreatic insufficiency when the pancreas starts pushing out fat so fast, you don't feel yourself defecation. I lost 80lbs that year. Worst year ever

Lupus can cause pancreatitis, which is inflammation of the pancreas. Symptoms include abdominal pain, nausea, vomiting, and elevated pancreatic enzyme levels. Pancreatitis requires urgent medical attention1. It can also be a side effect of medications taken for lupus. Lupus can cause pancreatitis, or inflammation of the pancreas. Symptoms include:

Abdominal pain that can spread to your back
Nausea and vomiting
Fever
Pancreatitis requires urgent medical attention. Pancreatitis can also be a side effect of azathioprine or steroids you take for lupus. Your doctor will do tests to find out what’s causing your pancreatitis before they treat it.
https://www.lupus.org/resources/how-lupus-affec...

Lupus and the digestive system

https://www.lupus.org/resources/how-lupus-affects-the-gastrointestinal-system