Often a preceding waxing and waning course of nausea and vomiting with reducing frequency of<unk>  movements and abdominal distension for a few weeks.
As the illness progresses an obvious mechanical<unk><unk>  may develop. See Small<unk><unk> #Clinnical Features
Malignant bowel obstruction
Behavioral-related
Large bowel obstruction
Lack of exercise
Small bowel obstruction
Diet-related
Intestinal ischemia
Fecal impaction