Neuropathic pain is a prevalent human chronic pain disorder affecting 1.6% of the population. It is caused by damage to peripheral somatosensory nerves resulting in chronic pain in response to otherwise innocuous stimuli. This condition is extremely difficult to manage because of the lack of effect of standard analgesics. Two different neuropathic pain models, the sciatic nerve injury model (Bennett) and spinal nerve ligation model (Chung), have been developed and successfully used to test therapeutic compounds.