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Esophageal spasm or oesophageal spasm is a disorder of esophageal motility. The esophagus is an organ in vertebrates which consists of a fibromuscular tube through which food passes, aided by peristalsis contractions, from the upper esophageal sphincter to the stomach through waves of co-ordinated muscle contraction, or peristalsis.〔(【引用サイトリンク】publisher= EMIS Health )〕 There are two types of esophageal spasm: *Diffuse esophageal spasm (DES), where there is unco-ordinated esophageal contractions where several sections of the esophagus can contract at once. *Nutcracker esophagus (NE) also known as hypertensive peristalsis, where the contractions are co-ordinated but with an excessive amplitude. Both conditions can be linked with Gastroesophageal reflux disease.〔 When the co-ordinated muscle contraction are irregular or uncoordinated, this condition may be called diffuse esophageal spasm. These spasms can prevent food from reaching the stomach where food gets stuck in the esophagus. At other times the co-ordinated muscle contraction is very powerful, which is called nutcracker esophagus. These contractions move food through the esophagus but can cause severe pain.〔(【引用サイトリンク】publisher= WebMD )〕 ==Symptons== Esophageal spasm is rare. Often, symptoms that may suggest esophageal spasm are the result of another condition such as gastroesophageal reflux disease (GERD) or achalasia.〔 The symptoms can also include dysphagia, regurgitation, noncardiac chest pain,〔(【引用サイトリンク】publisher= WebMD )〕 heartburn,〔(【引用サイトリンク】publisher= WebMD )〕 globus pharyngis (which is a feeling that something is stuck in the throat) or a dry cough.〔(【引用サイトリンク】publisher= Cleveland Clinic )〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Esophageal spasm」の詳細全文を読む スポンサード リンク
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