Sensory Dermatome Body Map
Each of the spinal nerves provides sensation to a predictable area of skin.
Back pain is one of the most common complaints and therefore examples of this:
Pain radiating down the leg to the small toe in the general pattern of the S1 dermatome suggests that a herniated disk may be pinching the S1 nerve root in the spine.
A sensory Dermatome Map allows for assessment of the nerves and neural pathways: