Keywords: اسپونهایوزیس; Allergy; Epithelial Permeability; Spongiosis; Transepithelial Resistance; Diagnostic; Diagnosis; DIS; dilated intercellular spaces; eos/HPF; eosinophils per high-power field; GERD; gastroesophageal reflux disease; MI; mucosal impedance; PPI; proton pump i