Beyond pain: can antidepressants improve depressive symptoms and quality of life in patients with neuropathic pain? Background Neuropathic pain, defined by the lnternational Association for the Study of Pain (IASP)as "pain arising as a direct consequence of a lesion or disease affecting the somatosensory system" [42], is a complex and potentially disabling condition, considered as a separate nosological entity despite the large variety of etiologic factors implied [19].Neuropathic pain secondary to medical conditions is a largely studied, yet difficult to treat phenomenon, affecting a large population of patients and burdened by both physical and psychosocial consequences. Recent studies have indeed pointed out that severe pain is one of the main predictors of depression, anxiety and low quality of life in patients with such chronic conditions, including for instance diabetes, spinal cord injuries, and cancer [57,76,84].Neuropathic pain shares with depression and with other neuropsychiatric disorders a multiplicity of neurotransmitters potentially involved in its pathophysiology and phenomenology [6,49]. Indeed, recent studies suggest that chronic stress, including stress-related psychiatric disorders, exacerbates neuropathic pain via the integration of stress-affect-related information with nociceptive information in the amygdala [48,91]. This might partially explain the high levels of anxious and depressive symptoms occurring in this population of patients [10,12,13,14,26,65,68,93]; symptoms which in turn play a key role on the personal experience of pain and, in general, on quality of life, thus complicating and aggravating the burden associate with this illness [35].Neuropathic pain and depression, furthermore, share some relevant principles of treatment, as conventional analgesics used in nociceptive pain are usually ineffective in alleviating neuropathic pain, while the use of antidepressants has been supported by evidence of efficacy. As a result, based on randomized clinical trials, certain