Advances of chronic pain: better insights, better treatment

Pain is often referred to as the "fifth vital sign". It profoundly impacts both physical and psychological well-being, either as a primary condition or in conjunction with other systemic diseases. Pain typically results from complex neurophysiological processes, including peripheral and central sensitization, altered pain pathways, and maladaptive neuroplasticity, which can lead to persistent or chronic pain. Current pharmaceutical treatments, such as non-steroidal anti-inflammatory drugs (NSAIDs) and tricyclic antidepressants, often fall short of desired therapeutic outcomes. To improve efficacy, advanced drug delivery systems (DDS) with extended-release formulations and multimodal analgesia have shown promise. Surgical interventions are increasingly recognized for chronic pain resistant to conservative treatments, while exercise, psychological counseling, and strong social support have proven benefits. This review examines the mechanisms of chronic pain, current management approaches, and explores potential future advancements in analgesic strategies.