[Disorders affecting the motor function of the UPPER ESOPHAGEAL SPHINCTER; LOWER ESOPHAGEAL SPHINCTER; the ESOPHAGUS body, or a combination of these parts. The failure of the sphincters to maintain a tonic pressure may result in gastric reflux of food and acid into the esophagus (GASTROESOPHAGEAL REFLUX). Other disorders include hypermotility (spastic disorders) and markedly increased amplitude in contraction (nutcracker esophagus). ( MSH )]
UMLS (ICD9CM) C0014858 Relation/PAR: Disease of esophagus
Relation/CHD: Deglutition Disorders
ACHALASIA & CARDIOSPASM
Esophageal Spasm, Diffuse
Esophageal reflux
CREST syndrome