Referred Pain Patterns Abdominal area of the opposite side, Buttock, Low back, Upper backCauses of Trigger PointsHold on, we are working on this.Self ExercisesHold on, we are working on this. Multifidi (Wikipedia) Related Referred Pain Patterns - Assign Colors with Pain Guide Iliopsoas Trigger PointsAnterior thigh, Anteromedial thigh, Buttock, Low back, Sacroiliac joint Iliocostalis Lumborum Trigger PointsAlong the muscle, Buttock Gluteus Medius Trigger PointsButtock, Low back, Posterior crest of ilium, Sacrum