An Observational Study on Lignocaine Infusion for Intractable Chronic Pain

International association for the study of pain (IASP) defines neuropathic pain as “pain caused by a lesion or disease of the somatosensory nervous system”. Neuropathic pain is caused by direct injury or damage to, or pathological change in peripheral or central nervous system. In contrast, nociceptive pain is caused by direct injury or disease caused by tissue damage [1]. Chronic pain in general defines as pain last more than 3 to 6 months [2]. Chronic neuropathic pain is very common all over the world. It is estimated that almost 6% to 8% of the general population suffer from chronic neuropathic pain [3,4]. Painful diabetic neuropathic pain is the most common type of chronic neuropathic pain.