In pediatric, because of diversity of clinical symptoms and difficulties of invasive surveying methods, there is a constant search of methods of early diagnosis, optimal treatment and course prediction. Clinical symptoms, risk factors, peculiarities of GERD coursing for school-aged children are examined in the article.Methods. It is included 93 patients (6-18 years) with clinical symptoms, typical for gastroduodenal pathologies. Children surveying involved detailed medical histories gathering, specification of feeding patterns, feeding regularity, daily regime, presence of chronical stress, sleep duration, presence of bad habits and bad feeding habits. From history of life - duration of breast-feeding and start of eating first food. Common clinical analyses: biochemical blood analysis, lipid profile, upper endoscopy with intragastral endoscopic pH-meter were applied.Results. Based on endoscopic surveying, three sub-groups were obtained: GERD-positive children without esophagitis, GERD-positive with esophagitis (catarrhal esophagitis), and GERD-positive with esophagitis (erosive esophagitis). Depending on GERD form, in both groups presence of risk factors was evaluated. Both groups were interviewed with questionnaire by Vein (2003). Symptoms of autonomic dysfunction was detected for 88.04 % of patients (more than 15 points by questionnaire).Conclusions. Conducted research showed diversion of GERD main clinical symptoms for children of two age groups: 6-11 and 12-18 y.o, and also relationship between separate risk factors and different forms of GERD. Optimization of primary screening diagnosis can be achieved by applying GERDQ-type kid’s questionnaire