Muscle knots in the Abdominal Obliques—both internal and external—are located along the sides and front of the abdomen, running diagonally from the lower ribs to the pelvis. These trigger points can refer pain to the upper and lower abdomen, groin, lower back, and even mimic symptoms like heartburn, digestive discomfort, or testicular pain. People often experience sharp or aching pain when twisting, bending, coughing, or deep breathing, which may be mistaken for internal organ issues.