It often starts with a completely ordinary movement: you bend forward, stand up from a chair, or twist your upper body. Suddenly, it’s back—that sharp pain in your lower back. Anyone who suffers from chronic back pain is familiar not only with the physical sensation. Often, there’s something else as well: the fear of the next bout of pain, the uncertainty when moving, and the constant awareness that you can no longer trust your own body completely. But why can back pain change a person’s entire outlook on life so drastically?
A new study by researchers at the University of California, San Diego, offers a remarkable explanation. The scientists discovered that movement-induced pain flare-ups in people with chronic back pain activate a specific network in the brain—the very network that is closely linked to our self-image, our memories, and our inner experience. The findings offer a new perspective on chronic pain.
When the Brain Links Pain to the Self
The study focuses on the so-called Default Mode Network (DMN), also known as the brain’s resting-state network or self-network. This network is particularly active when we are focused on ourselves: when we reflect on our past, recall memories, ponder our future, or grapple with our feelings and personal identity.
Normally, this network behaves differently during acute pain. For example, when we burn ourselves on a hot surface, the brain focuses its attention on the immediate pain stimulus. Activity in the Default Mode Network typically decreases in such cases. However, in people with chronic back pain, the researchers observed something surprising: if the pain was triggered by movement, the activity of this network increased. This does not mean that the pain is imaginary. Rather, the findings suggest that chronic pain is processed differently in the brain than a short-term pain stimulus. It appears to be more closely linked to the brain processes that shape our personal experience.
A single Movement—and Suddenly the Fear is Back
The study involved 114 people with chronic lower back pain. Using a special functional MRI method, the scientists observed changes in blood flow in the brain. Among other things, the participants performed a clinical leg-raising test, which can trigger back pain in affected patients. In addition, an unpleasant heat stimulus was applied to the calf to investigate another form of pain.
The results were revealing: During movement-induced back pain, the default mode network became more active. In response to the acute heat stimulus, however, the network showed the usual decrease in activity. Furthermore, the researchers found stronger connections between this network and the somatosensory cortex in people with particularly severe chronic back pain. This area of the brain is involved, among other things, in processing physical sensations. The results suggest that chronic back pain is not processed in isolation as a physical signal. Rather, memories, expectations, and personal experiences may also influence the experience of pain.
Why Chronic Pain Can Affect Your Entire Life
People who live with pain over a long period of time often find themselves caught in a stressful cycle. A movement once triggered severe pain. The next time they try it, they’re already worried that it might happen again. You move more cautiously, avoid certain activities, and monitor your own body more and more closely. Over time, your life can become increasingly organized around the pain.
A walk becomes a matter of weighing the risks. Carrying a shopping bag triggers uncertainty. Planning a longer car trip is no longer something you take for granted. Even enjoyable activities can be accompanied by the question of whether your back will cause problems again afterward.
The pain is then no longer present only at the moment it actually occurs. Even the memory of past episodes of pain and the anticipation of future discomfort can influence daily life.
This is precisely where the new discovery becomes interesting: If, during chronic pain flare-ups, the brain activates a network linked to one’s self-image, this could explain why those affected often experience their pain as part of their overall life situation.
Why Pain Medications Alone May Not Be Enough
These new findings could also explain why treating chronic back pain is often so challenging. While acute pain usually has a specific physical cause and subsides after a certain amount of time, chronic pain can develop into a complex process involving not only the body but also the brain. Traditional painkillers primarily target the body’s pain processing mechanisms. They can inhibit inflammation, influence the transmission of pain signals, and alleviate symptoms. However, this is not always sufficient for chronic pain. Over time, the processing mechanisms in the nervous system can also change. Past experiences of pain, fears, and the anticipation of new pain episodes increasingly influence how the body reacts to certain movements.
For example, someone who has frequently experienced pain while bending over may develop an unconscious fear of that very movement. The body tenses up, attention becomes increasingly focused on potential discomfort, and movements are increasingly avoided. This can create a cycle of pain, tension, insecurity, and avoidance behavior. This does not mean, by any means, that the pain is imaginary. It is real. Rather, it demonstrates how closely physical sensations and the brain’s processing of them are interconnected. The brain’s ability to change through experience is known as neuroplasticity.
In cases of chronic pain, such adaptive processes can cause the nervous system to react more sensitively to certain stimuli. For this reason, it can be helpful to base treatment on multiple pillars. In addition to individually tailored medication, physical therapy, targeted exercise, psychological pain therapy, and mindfulness exercises can be important components. Among other things, they help build physical resilience, reduce fear of movement, and develop a more relaxed approach to managing symptoms.
The goal here is not to replace physical causes with psychological interventions. Rather, the individual should be viewed as a whole. After all, in cases of chronic back pain, the goal of treatment should not be solely to reduce pain intensity. It is equally important to regain confidence in one’s own body, to participate more actively in life again, and to no longer let pain dictate one’s daily routine.
Can Mindfulness Change One’s Relationship with Pain?
Particularly interesting in this context are research approaches that examine the effects of mindfulness. Mindfulness meditation aims to consciously perceive thoughts, feelings, and physical sensations without immediately reacting to them with fear, judgment, or resistance. This does not mean simply accepting or ignoring pain. Rather, it is about changing the automatic reaction to an unpleasant sensation. For example, when someone perceives a sensation of pain, they do not necessarily have to immediately fall into a mental spiral of worry, tension, and negative expectations.
Researchers led by Fadel Zeidan are therefore investigating whether mindfulness can influence the brain processes involved in the connection between pain and personal experience. The active ingredient psilocybin is also being scientifically studied in this context. The focus is on potential changes in the brain processes that link pain to past experiences and future expectations. It is important to note, however, that these research approaches are still under investigation. The available results do not support a conclusive claim of effectiveness for the treatment of chronic back pain, nor do they provide a general recommendation for therapy.
The pain is Real—But it is More than Just a Physical Signal
One of the most important messages from this research may be one that many people with chronic pain have long known from their own experience: Pain does not affect only the area where it originates. It influences thoughts, feelings, behavior, relationships, and one’s perception of quality of life.
The new study highlights just how closely physical sensations and processes in the brain can be interconnected. It provides further scientific evidence that chronic pain should not be understood exclusively as a mechanical or physical problem.
This opens up new perspectives for future pain research. It is possible that treatment approaches in the future will take even greater account of how people experience their pain, what expectations they associate with it, and how they can regain trust in their own bodies despite their symptoms.
After all, the true goal of successful pain management should not be merely to reduce pain. It should also be about helping people regain some of their freedom of movement, their independence, and their quality of life. Sometimes, a new way of dealing with chronic pain begins with understanding that while pain is part of one’s experience, it does not have to define one’s identity.