Hello
Thanks for the query.
As you know chronic pancreatitis is an inflammatory disease of the pancreas characterized by destruction of its  tissue, and their replacement by fibrous scar.  The process is almost always progressive, even when patients stop drinking. Most of these individuals suffer chronic abdominal and back pain.

 An episode of binge drinking generally precipitates an attack typical of acute 
pancreatitis. This usually occurs in a patient who is a chronic alcoholic.

The medical management of pain in patients with chronic pancreatitis should include the cessation of all alcohol intake and cessation of smoking, if the patient is a smoker. Although it is difficult to predict the effect in an individual case, as many as 50% of patients experience some pain relief when they stop drinking. Pain relief may be more likely in those with early disease and relatively well preserved pancreatic function. In those with pain who already have severe pancreatic insufficiency, pain is likely to persist.

Since your father is a diabetic also and it looks that it is an attack of acute pancreatitis,he has to be managed in the hospital by intravenous fluids and medication.
Please do admit him as early as possible.
I hope to have answered your query however you may revert to me for any further query.
Best of luck
Thanks

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