The cell build-up can be caused by an allergic reaction or chronic gastroesophageal reflux disease (GERD).
[nm.org]
AJPH.2014.302147 Chou R, Turner JA, Devine EB, Hansen RN, Sullivan SD, Blazina I, Dana T, Bougatsos C, Deyo RA The effectiveness and risks of long-term opioid therapy for chronic
[lucperino.com]
[…] biopsies and food allergy testing in patients with chronic symptoms.
[bjgp.org]