Trigger Point Therapy A trigger point is a tight area within muscle tissue that causes pain in other parts of the body. A trigger point in the back, for example, may trigger pain in the neck. The neck, now acting as a satellite trigger point, may then cause pain in the head. The pain may be sharp and intense or a dull ache. Trigger points are caused by muscle overuse or injury, and because the aches are associated with moving parts, the pain is commonly mistaken for arthritis.