*Commonly, the pain is referred to a different part of the body that is unharmed. This is because the areas are served by the same part of the [[Spinal Cord - Anatomy & Physiology|spinal cord]] e.g. in angina (pain in the heart), pain can be felt in the inner left arm or jaw. | *Commonly, the pain is referred to a different part of the body that is unharmed. This is because the areas are served by the same part of the [[Spinal Cord - Anatomy & Physiology|spinal cord]] e.g. in angina (pain in the heart), pain can be felt in the inner left arm or jaw. |