<prompt> Answer this question truthfullyWhat are the typical characteristics of Osmotic chronic diarrhea, including the cause, osmolar gap, presence of bloodmucous, fecal fat, and response to NPO?  <response>: <reason> Osmotic chronic diarrhea is typically caused by malabsorption and presents with a high osmolar gap, no bloodmucous, positive fecal fat, and improvement after NPO. 