<prompt> Answer this question truthfullyWhat is a gastrointestinal disorder that is commonly idiopathic, but may also be caused by diabetes T1DM T2DM, medications TCAs, CCBs, and surgery?  <response>: <reason> Gastroparesis is a gastrointestinal disorder that is commonly idiopathic, but may also be caused by diabetes T1DM T2DM, medications TCAs, CCBs, and surgery. 