Understanding Central Pain Syndrome
Pain is the body's alarm system — a warning signal triggered when tissue is under threat. But for people with central pain syndrome, that alarm system malfunctions. The brain begins to interpret ordinary, non-threatening signals as severe, persistent pain, even when no new injury has occurred.
What makes this condition particularly difficult is that it is invisible from the outside. There is no wound, no swelling, no obvious cause — yet the pain is real, often intense, and can profoundly affect every dimension of daily life: physical function, mental health, sleep, and social participation.
Common Causes
Central pain does not originate from muscle inflammation or peripheral nerve damage. It arises from dysfunction or damage within the brain or spinal cord itself — disrupting the way pain signals are processed at the highest level of the nervous system. Common underlying causes include:
- Stroke — even after brain lesions have stabilised, areas involved in pain processing may remain damaged, leading to a condition known as post-stroke central pain syndrome
- Spinal cord injury — disrupts normal signal transmission between the body and brain, generating pain that bears no relationship to actual physical stimulation
- Multiple sclerosis (MS) — inflammation and demyelination (breakdown of the nerve's protective sheath) within the brain and spinal cord impairs the central pain-regulation system
- Central sensitisation — following prolonged chronic pain, the brain and spinal cord effectively "learn" to be in pain, becoming hypersensitive to stimulation far beyond what is normal; seen in conditions such as fibromyalgia and patients with multi-system chronic pain
What Does Central Pain Feel Like?
Central pain has a distinctive character that sets it apart from ordinary musculoskeletal pain:
- Diffuse, poorly localised pain — difficult to point to a specific location; may feel like whole-body pain
- Burning sensation — an internal heat, as if the body is on fire from the inside
- Electric shock or stabbing pain — sharp, sudden jolts that arise without any triggering stimulus
- Hyperalgesia — an abnormally amplified pain response, where even minor stimulation causes disproportionately intense pain
- Allodynia — pain triggered by stimuli that should not cause pain at all, such as a light breeze, gentle touch, or the feel of clothing against the skin
These symptoms collectively point to a problem not in the limbs or tissues, but in the brain and spinal cord's central pain-control system itself.
Treatment Options
Central pain syndrome is a chronic pain condition that is notoriously difficult to treat, because the dysfunction lies within the nervous system itself. There is currently no cure. The goals of treatment are to manage symptoms, reduce pain intensity, and restore as much quality of life as possible.
- Medication Standard analgesics — including aspirin, ibuprofen, and even opioids — are generally ineffective for central pain. Treatment focuses on agents that act directly on the nervous system:
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- Anticonvulsants — such as gabapentin or lamotrigine, which reduce abnormal pain signalling activity in the brain
- Antidepressants — not used for depression in this context, but to rebalance the neurotransmitters that regulate pain processing; commonly used agents include SNRIs (duloxetine) and TCAs (amitriptyline)
- Topical anaesthetics — lidocaine patches or creams applied to specific areas of skin to provide localised surface pain relief
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- Interventional pain procedures
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- Intravenous ketamine infusion — ketamine, administered at sub-anaesthetic doses, can interrupt central pain pathways and provide significant relief in carefully selected patients
- Transcutaneous electrical nerve stimulation (TENS) — delivers a low-level electrical current through the skin to reduce pain signal transmission
- Spinal cord stimulation — a surgically implanted device delivers low-frequency electrical pulses directly to the spinal cord, interfering with or modulating pain signal pathways before they reach the brain
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- Supportive Therapies
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- Physiotherapy — to maintain function, mobility, and physical conditioning
- Cognitive Behavioural Therapy (CBT) — to address the psychological dimensions of chronic pain, build coping strategies, and reduce the suffering associated with persistent pain
Prevention
Central pain syndrome often develops from causes that are difficult or impossible to predict. It cannot always be prevented directly. However, the following steps can meaningfully reduce your risk.
Reducing the risk of developing central pain:
- Protect the brain and spinal cord from injury — severe trauma to the central nervous system is a primary cause. Wearing appropriate safety equipment during high-risk activities and taking precautions to prevent head and spinal injuries is the most effective protective measure available.
- 2. Treat chronic pain early — the best way to prevent central sensitisation is to address pain conditions promptly and not allow them to persist untreated. Prolonged unmanaged pain increases the risk of the nervous system undergoing the changes that lead to central pain syndrome. .
- 3. Follow medical treatment plans consistently — properly managing existing conditions, whether a neurological disease, a musculoskeletal disorder, or a pain syndrome, significantly reduces the likelihood of it progressing into chronic central pain. 3. Follow medical treatment plans consistently — properly managing existing conditions, whether a neurological disease, a musculoskeletal disorder, or a pain syndrome, significantly reduces the likelihood of it progressing into chronic central pain.
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Preventing flares if you already have the condition:
- Take medication exactly as prescribed — consistent medication adherence is essential for maintaining stable pain control and nervous system balance
- Identify and avoid personal triggers — observe which activities, situations, or environments worsen your pain (common triggers include stress, temperature changes, and certain types of physical contact) and modify your routine accordingly
- Do not neglect mental health — physical pain has a direct and measurable impact on psychological wellbeing. Seeking support from a mental health professional, alongside medical treatment, improves outcomes and resilience
Reference
- American Academy of Neurology. (2011). Central pain syndromes. Neurology, 77(1), 1–8. https://doi.org/10.1212/WNL.0b013e318223c6f4
- Central pain syndrome. (2023). In StatPearls. StatPearls Publishing.
https://www.ncbi.nlm.nih.gov/books/NBK553027/ - Finnerup, N. B., Kuner, R., Jensen, T. S., & Baron, R. (2021). Neuropathic pain: From mechanisms to treatment. Physiological Reviews, 101(1), 259–301.
https://doi.org/10.1152/physrev.00045.2019
Pain Management at Bangkok Interventional Clinic
At Bangkok Interventional Clinic, we focus on personalised, in-depth pain management tailored to each individual.
- All patients are evaluated and treated by a board-certified pain specialist, ensuring accuracy, safety, and effective care.
- Targeted interventional procedures for fast and effective symptom relief
- Patient education to support sustainable, long-term self-care
Our goal is to meaningfully improve the quality of life of every patient we treat. If you are living with pain that affects your daily life, the right diagnosis and the right treatment plan are where change begins.
