An<unk>  is a medical<unk>  causing difficulty in swallowing, regurgitation of food and a spasm-type pain which can be brought on by an allergic reaction to certain foods or drugs like risperidone.
Esophageal motility disorder
Achalasia
Velopharyngeal inadequacy
Gastroesophageal reflux disease
Laryngomalacia
Esophageal stricture
Diffuse esophageal spasm
Esophageal web