Trigger points can occur within any skeletal muscle. They can be locally painful or radiate to other areas. Sometimes trigger point pain can mimic pain from other sources such as herniated discs.

This picture is an example of a commonly mistaken source of leg pain. This is the pattern for the gluteus minimus active trigger point. This can be mistaken for pain resulting from a low back disc herniation. There are specific treatments to reduce myofascial trigger point pain.