Nerve tissue is extremely sensitive and vulnerable to damage. If a nerve becomes irritated or squeezed, then the symptoms of a ‘Trapped Nerve’ will be felt, the common causes of a trapped nerve are Disc Bulges, Swelling, Piriformis Syndrome, Osteophytic Encroachment (due to the ‘stabilisation phase’ of bony degeneration) as well as Muscular and Fascial Tightness in specific regions.