RSD vs Fibromyalgia: Recognising the Differences in Symptoms and Care

Reflex Sympathetic Dystrophy, more often called Complex Regional Pain Syndrome these days, is a neurological condition where the nervous system amplifies pain signals long after an injury has healed. Fibromyalgia is a widespread pain disorder that changes how the brain and spinal cord process sensory information. Both can leave people bed-bound on bad days, and both are frequently misread by colleagues and even by some clinicians.

The two conditions are sometimes mentioned in the same breath, yet the underlying biology, the typical disease course, and the treatments that tend to work are quite different. Sorting those differences matters, because the path to feeling better depends heavily on landing on the right label first.

Australia's health system, anchored by Medicare and the Pharmaceutical Benefits Scheme, gives most people access to GPs and pain specialists, although waiting times in Perth, Adelaide, and regional Queensland can stretch for months. Telehealth has changed the picture, so a patient in Broome or Bendigo can now sit in front of a Sydney pain physician without leaving the lounge room, and self-diagnosis through online forums has become more common as a result.

This guide walks through how RSD and fibromyalgia differ in their symptoms, how each is investigated, and what treatment pathways are typically explored in Australia.

How RSD and Fibromyalgia Actually Start

RSD almost always has a trigger event. A fractured wrist, a sprained ankle, a surgical incision, or even a needle stick can set it off. Within weeks the affected limb may swell, change colour, become unusually hot or cold, and feel burning. The skin can become so sensitive that a bedsheet feels unbearable.

Fibromyalgia rarely begins with a specific injury. It tends to creep in across months or years, sometimes following an infection, intense stress, or another chronic illness such as rheumatoid arthritis. The hallmark is widespread musculoskeletal pain on both sides of the body, along with profound fatigue, foggy thinking, and unrefreshing sleep.

RSD usually has a clear starting line and a localised footprint, while fibromyalgia tends to arrive gradually and affect the whole system.

Symptoms That Overlap and Symptoms That Don't

Both conditions share a familiar cluster: persistent pain, poor sleep, brain fog, sensitivity to touch, and mood changes. People living with either often describe feeling disbelieved, a shared social experience rather than a clinical one.

The signs that lean toward RSD include visible changes in a single limb, asymmetry between sides, swelling, altered skin temperature, and dramatic sensitivity to light touch. Burning pain and the feeling that the affected area does not belong to the body are particularly suggestive of CRPS.

Fibromyalgia is more likely to involve tender points across multiple muscle groups, widespread tenderness, headaches, irritable bowel symptoms, and a deep tiredness that does not improve with rest. Tracking symptoms in a diary, which many Aussie patients do using a Notes app, helps clinicians tell the two apart.

Diagnosis in the Australian Context

There is no single blood test for either condition. RSD is diagnosed clinically using the Budapest criteria, often supported by a bone scan or MRI. A GP starts the process, then refers on to a pain specialist or neurologist. In major cities, dedicated pain clinics operate out of hospitals like Royal North Shore, the Royal Melbourne, and the Queen Elizabeth in Adelaide.

Fibromyalgia is diagnosed using criteria that focus on widespread pain lasting more than three months. A rheumatologist usually excludes conditions such as lupus, underactive thyroid, and coeliac disease first. Under Medicare, a chronic disease management plan from a GP can unlock subsidised visits to a physiotherapist, dietitian, or psychologist.

For people in the bush, accessing these specialists can mean a long drive or a flight coordinated through the Royal Flying Doctor Service. Telehealth helps bridge that gap for follow-up appointments.

Medication and Clinical Treatments

RSD responds best when treated early. The toolkit includes bisphosphonates, ketamine infusions, nerve blocks, and certain antidepressants or anticonvulsants that calm over-firing nerves. Physiotherapy guided by a clinician familiar with CRPS is considered essential. Topical treatments, desensitisation work, and graded motor imagery are commonly used in Australian pain clinics.

Fibromyalgia treatment leans on medications such as duloxetine, pregabalin, and low-dose tricyclic antidepressants, combined with structured exercise, sleep hygiene work, and cognitive behavioural therapy. Many Australians find gentle water-based exercise at a local hydrotherapy pool more tolerable than gym work, and Arthritis Australia runs helpful programs in several states. Pain Australia maintains a directory of multidisciplinary clinics for those needing more support.

Movement, Pacing, and Allied Health

Pacing is a word that comes up constantly in both communities. For RSD, gentle loading of the affected limb under professional supervision prevents stiffness and muscle wasting. Overdoing it on a good day is a common reason for setbacks.

For fibromyalgia, the evidence supports graded aerobic exercise, strength work, and mind-body practices such as tai chi or yoga. Hydrotherapy, often available through public hospital outpatient programs, is particularly well tolerated. Occupational therapists help with energy management, which Australians sometimes call "spoon budgeting" in online support groups. On rest days, low-effort mental hobbies such as online poker can fill the hours without taxing a sensitised body.

Emotional Wellbeing and Social Support

Living with either condition is emotionally draining. Rates of anxiety and depression are noticeably higher among people with chronic pain, and the financial stress of repeated appointments on top of reduced work hours adds another layer. A mental health care plan through a GP provides subsidised psychology sessions, and peer support groups, whether in-person at a community centre in Parramatta or online through the Pain Australia network, can make a real difference.

Talking with family about what a flare feels like, planning rest around meaningful activities, and protecting sleep are small but powerful habits. Some readers find that gentle leisure, such as the simple act of creating a reading nook, helps build a calming environment that soothes a sensitised nervous system.

Daily Life, Work, and the Home Setup

Workplace adjustments, flexible hours, and working from home have transformed life for many Australians with these conditions. The National Disability Insurance Scheme covers some people whose pain is severe, providing funding for supports, equipment, and home modifications.

For those with RSD, small home changes can prevent setbacks and reduce fall risk. Practical guidance on RSD home modifications walks through things like lever taps, soft-close drawers, and slip-resistant flooring. Keeping the mind engaged during long recovery periods also matters, and quiet leisure activities can make a real difference on difficult days.

If your pain fits one of these patterns more than the other, book a long appointment with your GP, bring your symptom diary, and ask for a referral to a chronic pain specialist. The right diagnosis is the doorway to the right treatment, and earlier is almost always better.