Dermatome (anatomy)
（重定向自Dermatomic area）
![](/Images/godic/202501/08/Grant_1962_6633728.png")
![](/Images/godic/202501/08/Grant_1962_6643729.png")
![Referred pain: Conscious pe****tion of visceral sensations map to specific regions of the body, as shown in this chart. Some sensations are felt locally, whereas others are perceived as affecting areas that are quite distant from the involved organ.](/Images/godic/202501/08/1506_Referred_Pain_Chart3729.jpg")
![Dermatomes of the Lower Limb (Modified, from Fender, after Foerster)](/Images/godic/202501/08/Grant_1962_6653729.png")
A dermatome is an area of skin that is mainly supplied by a single spinal nerve. There are 8 cervical nerves (C1 being an exception with no dermatome), 12 thoracic nerves, 5 lumbar nerves and 5 sacral nerves. Each of these nerves relays sensation (including pain) from a particular region of skin to the brain.