The most important diagnostic measure is to obtain a detailed medical history.
In addition, gastroscopy plays an important role, which can reveal lesions such as reflux esophagitis including its complications (stenosis, ulcer, bleeding). It is worth noting that in about 60% of cases, however, there are no mucosal lesions (the so-called non-corrosive reflux, NERD).
Gastroscopy is also very important in the diagnosis of Barrett’s esophagus, as this can only be done endoscopically (with biopsies). To detect its neoplastic changes in patients with Barrett’s esophagus, special chromoendoscopy and magnification endoscopy techniques are used that give us valuable information.
Functional diagnostic tests also include impedance Ph-measurement which allows the differentiation between acidic and non-acidic reflux, especially in treatment-resistant patients.