Clinical parameters
Anxiety, Pain, anxiety, cancer pain, pain, depressive, depression, Depression, NRS

The pain numerical rating scale (NRS) is a pain self-assessment tool. The patient rates his or her pain orally on a scale from 0 to 10, where 0 corresponds to the lower limit defining absence of pain and 10 corresponds to the upper limit defining the worst imaginable pain. The NRS was preferred to a VAS (visual analogue scale) based on the 2009 expert consensus on cancer pain assessment [This scale can be used to include patients considered to experience sufficiently severe pain to justify more or less invasive treatment. For example, pain scored as 3/10 corresponds to moderate pain [The validity and reliability of the NRS for the evaluation of the efficacy of analgesic treatment has been established [The Brief Pain Inventory (BPI) is a self-administered questionnaire constructed and tested in cancer pain [The short form, composed of 9 items, has been validated and shown to be reliable in the assessment of cancer pain [Evaluation of the various symptoms observed in the context of palliative care constitutes an evaluation of the quality-of-life approach in this setting. The Edmonton Symptom Assessment System (ESAS) has been validated and found to be one of the most reliable of the various scales [Since 1983, anxiety and depression are generally evaluated by the HADS (Hospital Anxiety and Depression Scale [The STAI-Y [Scores range from 20 to 80 and are classified in the following way:very high > 65,high: 56 to 65,moderate: 46 to 55,low: 36 to 45,very low ≤35.To date, this scale has not been validated for the evaluation of cancer pain, nor in the context of palliative care. As much as an improvement of a possible depressive state could be explained by the action of the tDCS [The Medication Quantification Scale (MQS) is a scale used to quantitatively evaluate changes in analgesic drug administration [