Pain is Complex: Understanding the Biopsychosocial Model of Pain
Pain is Complex: Beyond Injuries For many years, pain was thought of as quite simple. If something hurt, it was assumed that something in the body must be damaged. A sore back meant there was something wrong with the back. A painful shoulder meant there was something wrong with the shoulder. While this way of thinking makes sense after an injury, it doesn’t explain why so many people continue to experience pain months or even years after the body has healed. It also doesn’t explain why one person with significant arthritis can have very little pain, while another experiences severe pain despite very little showing on a scan. Over the past few decades, research has changed our understanding of pain dramatically. We now know that pain is far more complex than simply responding to tissue damage. Pain is influenced by many different factors working together, which is why healthcare professionals often refer to the biopsychosocial model of pain. Although the name sounds technical, the idea is actually quite simple. Pain is influenced by your body, your mind and the world around you. More than just the body When most people think about pain, they naturally think about the physical side of things. An injury, inflammation, arthritis, muscle weakness or a sensitive nerve can all contribute to pain, and these biological factors certainly matter. However, they are rarely the whole story. Have you ever noticed that pain feels worse after a poor night’s sleep? Or when you’re particularly stressed? Perhaps you’ve been able to ignore an ache while on holiday, only to notice it again when life became busy. These experiences aren’t unusual. They demonstrate that pain isn’t determined solely by what is happening in our muscles, joints or bones. Instead, our nervous system is constantly taking in information from many different sources before deciding how much protection we need. Our thoughts and emotions matter too This is where the psychological part of the biopsychosocial model comes in. When we live with pain for a long time, it’s understandable to become worried about what it means. Many people begin avoiding movement because they’re afraid of making things worse. Others lose confidence in their bodies or become anxious every time they experience a flare-up. Stress, anxiety, poor sleep and low mood don’t create pain out of nowhere, but they can make the nervous system more sensitive. In the same way that they can affect our concentration, digestion or blood pressure, they can also influence how our brain processes pain. This doesn’t mean the pain is “all in your head.” It means that the brain, which is responsible for producing the experience of pain, considers emotional and psychological information alongside physical information when deciding how much protection the body needs. The role of our environment Pain doesn’t occur in isolation. Every one of us lives within families, workplaces and communities, and these environments can also influence our pain experience. Someone trying to recover while caring for young children, managing financial pressures or working in a physically demanding job faces very different challenges from someone who has plenty of time, support and opportunity to rest and recover. Feeling isolated, unsupported or overwhelmed can increase the body’s overall stress levels. On the other hand, feeling understood, connected and supported can make recovery easier. These social factors are an important part of the picture and are often overlooked. Everything is connected Perhaps the most important thing to understand about the biopsychosocial model is that these factors don’t exist separately. Imagine someone strains their back while lifting. Initially, the tissues are irritated and need time to recover. Because they’re worried about damaging their back further, they stop exercising altogether. Their fitness gradually declines, they begin sleeping poorly, and they become increasingly anxious every time they feel pain. They stop gardening, avoid playing with their grandchildren and withdraw from activities they once enjoyed. Over time, each of these changes begins influencing the others. Reduced activity leads to deconditioning. Poor sleep increases sensitivity. Fear reduces confidence. Stress continues to build. The pain becomes less about one injured structure and more about an overprotective nervous system responding to many different influences. The encouraging news is that this process can work in the opposite direction as well. Improving sleep may reduce sensitivity. Learning more about pain can reduce fear. Gradually becoming stronger can rebuild confidence. Returning to enjoyable activities can improve mood. Small improvements in several different areas often have a much bigger impact than focusing on just one. What does this mean for treatment? Understanding pain as a complex experience changes how we approach treatment. Rather than searching endlessly for one structure to “fix,” modern pain management focuses on helping the whole person. For some people, that may involve becoming stronger through exercise. For others, it might involve improving sleep, managing stress, learning pacing strategies or addressing fears around movement. Often, it’s a combination of many small changes that gradually help calm the nervous system. Current clinical guidelines for persistent pain consistently recommend active approaches such as education, exercise and self-management, while recognising that every person’s journey is different. There is rarely one single solution, but there are many evidence-based strategies that can work together. A hopeful message One of the most exciting discoveries from modern pain science is that our nervous system is adaptable – it’s neuroplastic. Just as it can become more sensitive over time, it can also become less sensitive. Recovery isn’t always about eliminating every sensation of pain. More often, it’s about helping people understand their pain, rebuild confidence in their bodies and return to the activities that give their lives meaning. Pain is complex, but that complexity also gives us many different opportunities to help. At Nordica Health, we take a whole-person approach to pain management. We recognise that no two people experience pain in exactly the same way, so treatment should never be one-size-fits-all. By combining education, exercise, lifestyle medicine and personalised support, we aim to help people better understand their pain, improve
What is Persistent Pain?
What is Persistent Pain? Pain is one of the most common reasons people seek healthcare. While pain is often a normal and helpful response to injury, not all pain means that the body is damaged. Understanding the difference between acute pain and persistent pain is one of the most important steps towards recovery. For many people, learning how pain works can reduce fear, increase confidence, and help them return to the activities that matter most. Pain is your body’s alarm system Pain is designed to protect us. If you accidentally touch a hot stove, sprain your ankle, or cut your finger, pain encourages you to move away from danger, protect the injured area, and allow healing to occur. In the early stages after an injury, pain is often closely related to tissue damage. This is known as acute pain. As healing progresses, however, pain and tissue damage become less closely linked. For some people, pain continues long after the tissues have healed. This is called persistent pain or chronic pain. Acute pain: a normal part of healing Acute pain usually occurs after an injury, surgery, or illness, or if any tissue has become irritated or slightly inflammed. It serves an important purpose by protecting the affected area while the body repairs itself. During healing, the body goes through three overlapping stages. 1. Inflammatory phase (approximately 0-7 days) Immediately after an injury, immune cells of the body begin cleaning up damaged tissue. This stage often involves: Pain Swelling Warmth Redness Reduced movement Although inflammation has a negative reputation, it is an essential part of normal healing. 2. Repair phase (approximately 1-6 weeks) The body begins laying down new tissue, including collagen. During this phase, gentle movement and appropriately graded exercise often help the healing tissue become stronger and better organised. 3. Remodelling phase (approximately 6 weeks to many months) The new tissue gradually becomes stronger and adapts to the demands placed upon it. Even after pain has settled, tissues continue remodelling for many months. Different tissues heal at different rates One reason recovery varies from person to person is that different tissues heal at different speeds. Approximate healing times include: Tissue Typical healing time* Skin 1-3 weeks Muscle 2-8 weeks Bone Around 6-12 weeks for most fractures Ligaments 6-12 weeks (sometimes longer) Tendons Around 3-6 months Cartilage Often several months and may have limited healing capacity *These are general timeframes. Healing varies depending on age, overall health, nutrition, blood supply, injury severity, medications, smoking, medical conditions and many other factors. Importantly, tissue healing does not always mean pain disappears at exactly the same time. Likewise, ongoing pain does not necessarily mean tissues are still damaged. When pain becomes persistent Pain is generally considered persistent when it continues beyond the expected healing time, often lasting longer than three months. This does not mean the pain is “imagined” or “all in your head.” Persistent pain is very real. The difference is that the nervous system has become more sensitive. Think of your nervous system as your body’s alarm system. Normally, the alarm sounds when there is genuine danger. With persistent pain, the alarm system can become overprotective. It starts sounding more easily, even when the tissues themselves are relatively safe. This increased sensitivity is influenced by many factors, including: Previous injuries Stress Poor sleep Anxiety or depression Fatigue Reduced physical activity Fear of movement Previous pain experiences General health and inflammation Social and environmental factors Pain becomes an experience created by the brain after weighing up many sources of information – not simply a direct measure of tissue damage. Acute pain and persistent pain require different treatment approaches Because the underlying drivers of pain change over time, treatment strategies often change too. Acute pain management In the early stages after injury, treatment may focus on: Protecting the injured tissue Gradually restoring movement Managing swelling when appropriate Maintaining general activity where possible Progressive loading as healing allows The goal is to support tissue healing while avoiding unnecessary loss of strength and function. Persistent pain management When pain has become persistent (or recurrent) treatment usually shifts towards calming an overprotective nervous system while helping people return to meaningful activities. Current clinical guidelines commonly recommend: Education about how pain works Individualised exercise Gradual exposure to movement Pacing strategies Improving sleep Managing stress Addressing lifestyle factors Building confidence and self-efficacy Psychological approaches when appropriate Passive treatments such as massage or manual therapy may provide temporary symptom relief for some people, but they are generally most effective when combined with an active rehabilitation approach rather than used on their own. Does pain always mean damage? Not necessarily. Most of us have experienced soreness after a new exercise session. Although the muscles may be painful for several days, this is a normal adaptation rather than an injury. Likewise, many people continue to experience pain after tissues have healed, while others have significant changes visible on scans with very little or no pain. Pain is therefore best understood as a protective response rather than a direct measure of tissue damage. Recovery is possible One of the most encouraging discoveries from pain research is that the nervous system is adaptable. Just as it can become more sensitive, it can also become less sensitive. With the right combination of education, movement, gradual exposure, healthy lifestyle habits, and support, many people learn to regain confidence, improve function, and return to activities they once avoided. Recovery does not always mean eliminating every sensation of pain. For many people, it means living a fuller, more active, and more meaningful life despite occasional symptoms. You’re not alone Persistent pain affects millions of people and can influence every aspect of life, including work, family, sleep, mood and social activities. The good news is that we now understand far more about persistent pain than we did even 20 years ago. Modern pain management focuses not simply on finding “what is damaged,” but on helping people understand their pain, improve their health, and build confidence in their body’s