Eosinophilic esophagitis (e-o-sin-o-FILL-ik uh-sof-uh-JIE-tis) is a chronic immune system disease in which a type of white blood cell (eosinophil) builds up in the lining of the tube that connects your mouth to your stomach (esophagus).
https://www.mayoclinic.org/diseases-conditions/eosinophilic-esophagitis/symptoms-causes/syc-20372197

