What a pain in the back: etiology, diagnosis and future treatment directions for discogenic low back pain.
Publication Year:
2025
PubMed ID:
41120264
Funding Grants:
Public Summary:
Chronic lower back pain is a massive global issue that is usually linked to the wearing down of the shock-absorbing discs in our spine. For a long time, doctors focused mostly on the physical damage to the discs, but now researchers are treating the pain itself as its own complex condition. When spinal discs break down, they suffer from structural damage, heavy inflammation, and the unnatural growth of sensitive nerves and blood vessels deep inside the tissue. Interestingly, having a damaged disc doesn't always mean a person will actually feel pain, and scientists are still working hard to figure out exactly why that happens. Because our current medical tests and research tools are still quite limited, today's treatments mostly just temporarily mask the symptoms rather than actually curing the underlying causes of the back pain.
Scientific Abstract:
Chronic lower back pain (LBP) is the leading cause of disability worldwide. Due to its close relationship with intervertebral disc (IVD) degeneration (IVDD), research has historically focused more on understanding the mechanism behind IVDD while clinical efforts prioritize pain management. More recently, there has been a shift toward understanding LBP as a distinct pathological entity. This review synthesizes current knowledge on discogenic LBP, combining known pathophysiology, molecular mechanisms, risk factors, diagnostic challenges, and available experimental models. IVDD is a complex, multifactorial process involving biochemical, mechanical, and inflammatory changes within the disc, leading to structural breakdown and potential discogenic pain. Key mechanisms include extracellular matrix degradation, upregulation of inflammatory mediators, immune cell infiltration, and aberrant nerve and vascular ingrowth. However, not all cases of IVDD result in LBP, highlighting the need for further investigation into the cellular, molecular, and biomechanical factors contributing to symptom development. Current diagnostic tools and experimental models for studying discogenic LBP remain limited, impeding the development of targeted treatments. Existing therapies primarily focus on symptom management rather than addressing underlying disease mechanisms.