| McBurney sign | Localized right lower quadrant pain or guarding on palpation of the abdomen (the single most important sign) |
| Psoas sign | Pain on hyperextension of right thigh (often indicates retroperitoneal retrocecal appendix) |
| Obturator sign | Pain on internal rotation of right thigh (pelvic appendix) |
| Rovsing sign | Pain in the right lower quadrant with palpation of the left lower quadrant |
| Dunphy’s sign | Increased pain in the right lower quadrant with coughing |
| Hip flexion | Patient maintains hip flexion with knees drawn up for comfort |
| Other peritoneal signs | Rebound tenderness, hyperesthesia of the skin in the right lower quadrant |