Management of Functional Constipation Using Specific Acupuncture Point LI 2 (Erjian): A Case Study

Abstract

Functional constipation is a prevalent gastrointestinal disorder characterized by difficult stool passage, infrequent bowel movements, and a persistent sensation of incomplete evacuation. Non-pharmacological interventions such as acupuncture are gaining attention for their potential role in symptom management. A 32-year-old male presented with a complaint of constipation for the past 2 years. Based on the Rome IV criteria, it was diagnosed as functional constipation. The patient underwent acupuncture treatment targeting bilateral LI2 (Large Intestine 2) identified as a water point in traditional Chinese medicine associated with regulating intestinal function. Sterile needles were retained for 30 minutes per session, administered on alternate days over a period of three months. Treatment outcomes were evaluated using the Bristol Stool Scale, bowel movement frequency per week, and the PAC-SYM Questionnaire before and after the intervention. Following the intervention, the patient demonstrated marked clinical improvement, including normalization of stool consistency, increased bowel frequency to daily evacuation, reduced straining, and resolution of incomplete evacuation. This case highlights the potential effectiveness of acupuncture at LI2 in managing functional constipation. These findings suggest that LI2 acupuncture may represent a targeted and effective non-pharmacological approach for functional constipation; however, further controlled studies are warranted to confirm its efficacy.