<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> .
Achlorhydria
Steatorrhea
Polydipsia
Drooling
Constipation
Constipation  
Parasomnia
Borborygmus