Eosinophilic oesophagitis results in an inflamed oesophagus, the muscular tube that connects the mouth to the stomach. Around 8 in 10 cases are seen in people with allergic conditions such as hay fever and asthma. The frequency of eosinophilic oesophagitis appears to be increasing. The reasons are unclear, but it is known that allergies of all types have become more common then they were a generation or two ago.
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