the authors found the following frequency of occurrence of the fundamental symptoms : ( 1 ) in simple rdoe , pyrosis in 82 % , pain in 82 % ( epigastrium 42 % , thorax 30 % , throat 7 % ) , a postural impairment in 50 % , regurgitation in 30 % , vomiting in 15 % , ructus and dysphagia in 11 % .
C0018834
pyrosis
C0030193
pain