Any ideas on what would cause loss of bowel control?

my father in law is diabetic and his nurse practioner can't get his sugar under control. she keeps changing his insulin amounts. he has lost control of his bowels and recently his urination. he shakes all the time. sometimes he can't walk. he is now in the hospital because of it. any ideas about this? and also just what is a nurse practioner?Any ideas on what would cause loss of bowel control?
It is difficult to answer this question, as more information is needed...BUT :


Episodes of hypoglycaemia can cause large sympathetic outflow, which can sometimes cause people to lose control of their bowels (and bladder). But this would be fairly obvious, as it would always be after a clinical episode of hypoglycaemia.


Infections can wreak havoc with glucose control, and urinary tract infections can certainly present with tremors and incontinence. Worth checking out. Diabetes makes one more susceptible to infections in general - any signs of skin, foot, lung etc infections?


If his diabetes is secondary to chronic pancreatitis, lack of pancreatic enzymes may cause voluminous foul stools, and potentially incontinence (but not urinary incontinence).


Is there any concerns about dementia, Normal Pressure Hydrocephalus or Parkinson's disease?


Any back problems, trauma or spinal compressive symptoms?

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