[Dysphagia with no apparent cause].

Dysphagia can be caused by a number of disorders, benign or malignant, that involve either the oropharynx or the esophagus. The cause of dysphagia can be determinated with an accuracy on the basis of a careful history alone in most cases. In patients without endoscopic abnormality, eosinophilic esophagitis must be suspected. Esophageal manometry is especially useful for the diagnosis of achalasia. There are no specific treatment for motility disorders other than achalasia and its variants.