The symptoms were something most children complain about from time to time, but John Henry Marcinak, the first Marcinak child diagnosed with eosinophilic esophagitis, was experiencing those symptoms too frequently.
http://www.pekintimes.com/news/20180706/raising-awareness-rare-gastric-issue-which-may-not-be-so-rare
Raising awareness: A rare gastric issue which may not be so rare