<unk>  is a common symptom seen in the elderly poplulation owing to senile physiological changes in the muscles involved in deglutition. The prevalance of<unk>  in the elderly population is 7% to 22% per 100,000 individuals. Patients of all age groups may develop<unk>  and the incidence of<unk>  increases with age.
Dysphagia epidemiology and demographics
Achalasia epidemiology and demographics
Barrett's esophagus epidemiology and demographics
Esophagitis epidemiology and demographics
Deafness epidemiology and demographics
Peptic ulcer epidemiology and demographics
Esophageal cancer epidemiology and demographics
Lactose intolerance epidemiology and demographics