On the one hand, after nerve compression, the afferent neurons increase the release of substance P, Glutanic acid and other pain transmitters, which will induce hyperalgesia.

• 一方面，外周神经压迫损伤后，初级传入神经元释放的P物质，谷氨酸等疼痛介质增加，诱发痛觉过敏。