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Introduction. The ingestion of caustic substances represents a medical/surgical emergency, the severity of the lesions usually depends on the nature and quantity of the ingested product, and the treatment requires a multidisciplinary approach. Aim and methods. to retrospectively analyze the profile of the patients with caustics ingestion from Bihor Emergency Clinical County Hospital between 1st of January 2013 and 31st of December 2023. We carefully analyzed the files of the aforementioned patients for clinical, biological, endoscopic, therapeutic as well as the evolving patterns. Results. We included 42 patients, with a clear male predominance, M/F ratio of 1.62. The mean age was 34.6 years ±14.2, rural/urban ratio 24/18. From the studied group, 12 patients (28.5%) were known and followed-up with a psychiatric illness. Accidental ingestions were less frequent n=13 (31%) than voluntary ingestions n=29(69%). Among the substances, HCl/bleach was the most used n=20 (47.6%), followed by ethylene glycol n=12 (28.6%), NaOH n=5 (11.9%), H2SO4 n=2 (4.8%), unknown substance n=3 (7.1%). At admission, 23 (54.8%) patients presented oropharyngeal lesions, vomiting in 32 cases (76.2%), epigastric pain in 32 cases (76.2%), esophageal syndrome in 10 cases (23.8%), hematemesis in 4 cases (9.5%), peritoneal syndrome in 3 cases (7.1%), acute renal failure in 7 cases (16.7%). After excluding a surgical emergency, the UGIE performed in the first 24 hours after admission, showed according to the Zargar classification: grade I esophageal lesions -7 cases (16.7%), grade II -18 cases (42.9%), grade III - 6 cases (14.3%) and grade IV -3 (7.1%). Grade I gastric lesions were observed in 18 patients (42.8%), grade II in 4 patients (9.5%), grade III in 13 patients (31%), grade IV in 2 (4.8%). All patients received medical treatment (PPI, metoclopramide) and parenteral nutrition according to severity. Early pneumomediastinum after UGIE was observed in 3 patients (7.1%). The in-hospital mortality rate was (16.7%). A predictive factor for unfavourable prognosis is hyperleukocytosis (p=0.018). There is no significant correlation between the amount ingested (p=0.8) or age (p=0.6) and the evolution of the patients or between the product ingested and the severity of esophageal/gastric involvement at admission. Conclusion. In our study, the epidemiological profile of caustic ingestion was dominated by the voluntary ingestion of HCL/bleach, the symptomatology was mainly digestive, and hyperleukocytosis represented an unfavourable prognostic factor. [ABSTRACT FROM AUTHOR]