Clinical Features and Symptom Burden in Vietnamese Patients with Diarrhea-Predominant Irritable Bowel Syndrome: A Single-Center Cross-Sectional Study Using IBS-SSS and IBS-QoL Scores

. IBS-D imposes a substantial symptom burden and significantly reduces the quality of life in Vietnamese patients, particularly among those with severe disease. The high prevalence of overlap syndromes, along with contributing factors like smoking and diabetes, further increase the complexity and severity of the condition.