Undiagnosed abdominal pain.
D000005:Abdomen; D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D008875:Middle Aged; D010146:Pain; D011602:Psychophysiologic Disorders / Q000175:diagnosis / Q000209:etiology / Q000628:therapy