Most common GI manifestation in HIV infection is -
Chronic small bowel diarrhea may be due to HIV enteropathy.typically present with chronic watery diarrhea & wasting without fever.Infection with one of three unicellular organisms is responsible for most cases: cryptosporidiosis,mucrosporidiosis, isosporiasis. Reference: Harrison20th edition pg 789
Amebiasis
Cryptosoporidiosis
Giaridiasis
Hook Worm infestation
Infection