Differential Diagnosis (Hypertrophic Pyloric Stenosis)

Survey of the most important differential diagnoses specifically of the hypertrophic pyloric stenosis and in general of vomiting, regurgitation and dysphagia. The most frequently observed pathologies are functional causes of vomiting, gastroesophageal reflux, abdominal emergencies, and extraabdominal causes. Because it is difficult to differentiate the symptoms 'vomiting, regurgitation and dysphagia' from each other at the preferred age of hypertrophic pyloric stenosis, rare differential diagnoses are listed, too, such as stenosis of the esophagus, achalasia, and foreign bodies of the esophagus. In dysphagia, hypersalivation and food getting stuck in the throat may be present as additonal signs.