Lidocaine and Triamcinolone vs Saline Trigger Point Injection for Treatment of Chronic Abdominal Wall Pain

Inclusion Criteria: * Clinical diagnosis of chronic abdominal wall pain * Prior ultrasound or cross-sectional imaging of the abdomen to exclude other causes * Baseline Brief Pain Inventory score ≥ 5 Exclusion Criteria: * Multiple trigger points * Abdominal wall hernia on exam * Weight loss * Rectal bleeding * Recent change in bowel habits * Decompensated cirrhosis or recurrent ascites * Allergy or contraindication to study medications * Known thrombocytopenia with platelet count \< 50,000 * Other diagnosis of chronic pain syndromes including fibromyalgia * Unable to provide informed consent * Pregnancy