<prompt> Most com mon cause of diarrhea in AIDS patients-Salmonella typhimuriumCryptosporidiumCandidaisophora  <response>: Ans. is b i.e., Cryptosporidium o Most common cause of diarrhea in HIV - Cryptosporidium.Diseases of Oropharynx and GI system in H.I.V.o These areOral lesions ; Thrush oral candidiasis, oral Hairy leukoplakia caused by EBV, and aphthous ulcer.Esophageal: Esophagitis by CMV, HSV or Candida.Diarrhea : Diarrhea is caused by :-o Bacteria : Salmonella, Shigella, Campylobacter, and mycobacteria avium intracellulare.o Fungal: Histoplasma, Coccidioides, penicillium.o Other : CMV, microsporidia, isospora belli, and Cryptosporidia,AIDS enteropathy HIVenteropathy 