The investigator will issue a Patient Information Consent for the participant in the study. 1.Patients will be asked to complete the Reflux Symptom Index questionnaire.~Clinical survey, medical history 2. Objective methods for assessing the patient's condition:~- examination of ENT organs: rhinoscopy, otoscopy, pharyngoscopy and laryngoscopy 3. Laboratory and instrumental research methods - Endoscopic laryngoscopy and video laryngoscopy. pH-metry: The collection of mucus from the laryngopharynx for the determination of acid-base values. Acoustic voice analysis: objective assessment of the voice condition 4.Sociological method: determination of lifestyle, nutrition, the presence or absence of bad habits.~5. Subjective methods for assessing the condition of the larynx - Questionnaires.~6. Аnalysis of the received data
The investigator will issue a Patient Information Consent for the participant in the study. 1.Patients will be asked to complete the Reflux Symptom Index questionnaire.~Clinical survey, medical history. 2. Objective methods for assessing the patient's condition:~- examination of ENT organs. 3. Laboratory and instrumental research methods: Endoscopic laryngoscopy and video laryngoscopy, pH-metry, acoustic voice analysis.~4.Sociological method. 5. Subjective methods for assessing the condition of the larynx. 6. Аnalysis of the received data