text: <unk>  refers to nonexistent hydrochloric acid secretion in the stomach. This condition may occur spontaneously as a result of a clinical disorder or from drug administration (iatrogenic).  A gastric pH of greater than 3.5 and a serum gastrin levels higher than 500-1000 pg/mL may suggest a diagnosis of<unk> .
option_0: Achlorhydria
option_1: Steatorrhea
option_2: Polydipsia
option_3: Drooling
option_4: Constipation
option_5: Constipation  
option_6: Parasomnia
option_7: Borborygmus