<prompt> All of the following are features of secretory diarrhea, except:It is painlessReduces with fastingStool volume is 1L dayStool osmotic gap is normal  <response>: Secretory diarrhea occur due to derangements in fluid and electrolyte transpo across the enterocolonic mucosa. Features of secretory diarrhea includes: ? Painless ? Persist with fasting ? Watery and large volume ? Normal fecal osmotic gap Ref: Gastrointestinal Physiology Kim E. Barrett, Chapter 5; Harrisons Internal Medicine, 18th Edition, Chapter 40 