Clinical finding	Intra-abdominal visceral pain	Abdominal wall pain
Advanced imaging findings	Often positive	Usually unremarkable
Carnett test	Negative	Positive
Constitutional symptoms	Anorexia, chills, fever, weight loss	Typically absent
Gastrointestinal or genitourinary symptoms	Altered bowel habits, dysuria, frequent urination, gastrointestinal bleeding, jaundice, nausea, vaginal bleeding or discharge, vomiting	Typically absent
Laboratory findings	Elevated white blood cell count, inflammatory markers, or serum lactate level	Usually within normal limits
Pain characteristics	Aggravated/relieved by eating or defecation; peristaltic pain	Unrelated to meals or bowel function; constant or fluctuating, nonperistaltic
Sex predominance	None	Females
Tender spot	Location depends on underlying pathology; relatively vague	Clearly identifiable superficial tender area < 2 cm, typically near the rectus abdominis