Ancor Serrano

Pain is a complex phenomenon to study, understand and treat. It is a personal experience with a multidimensional character influenced by biological, psychological and social factors. Pain is an unpleasant sensory and emotional response to a stimulus associated with actual or potential tissue damage [1]. The difference between acute pain and chronic pain lies in a pathophysiological rather than temporal criterion [2].

Background Chronic pain is a common, multifaceted and distressing issue supposing a significant societal and individual burden.1 Its management can be challenging, with approximately 20% of patients requiring opioid treatment.2 Chronic pain heavily burdens healthcare and welfare systems due to high demand and economic aid requirements, thus making it an important health and social care challenge that should not be overlooked.3–5 Chronic non-cancer pain (CNCP), defined as pain lasting beyond...