Do I Have Ankylosing Spondylitis?
Inflammatory back pain is often mistaken for general mechanical back pain in the early stages.
Ankylosing spondylitis, also known as axial spondyloarthritis, is commonly missed early on because symptoms can develop gradually over several years.
You may have ankylosing spondylitis if you experience:
- Back pain starting before the age of 40 to 45
- Pain lasting longer than 3 months
- Morning stiffness lasting more than 30 minutes
- Symptoms that improve with movement but worsen with rest
- Night pain, especially in the second half of the night
- Alternating buttock pain
- Ongoing fatigue or reduced flexibility
In clinical practice, many patients are initially treated for “mechanical back pain” before inflammatory spinal arthritis is correctly identified.
Early diagnosis is important because untreated inflammation can lead to progressive stiffness, spinal fusion and reduced mobility.
Concerned about these symptoms? Arrange a specialist assessment.
What is Ankylosing Spondylitis?
A long term inflammatory condition that mainly affects the spine, causing pain, stiffness and reduced mobility.
Ankylosing spondylitis is a chronic autoimmune inflammatory condition that primarily affects the spine and sacroiliac joints, although other joints and areas of the body can also become involved.
It belongs to a broader group of inflammatory conditions known as axial spondyloarthritis.
This includes:
- Non radiographic axial spondyloarthritis, where inflammation may only be visible on MRI scans
- Ankylosing spondylitis, where structural changes become visible on X rays over time
This distinction is important because many patients develop symptoms years before changes appear on standard X rays.
The condition typically develops in teenagers and young adults and is more common in men, although women can also be affected.
Symptoms often improve with exercise and movement rather than rest, which helps distinguish inflammatory back pain from mechanical causes.
Without appropriate treatment, chronic inflammation can lead to reduced spinal flexibility and long term structural damage.
Symptoms of Ankylosing Spondylitis
Symptoms commonly affect the spine, joints and tendon attachment sites, but inflammation can also affect other parts of the body.
Symptoms usually develop gradually and may come and go over time. Many patients initially experience persistent lower back pain and stiffness that improves with movement and exercise.
Common symptoms include:
- Chronic lower back pain
- Morning stiffness
- Reduced spinal flexibility
- Hip or shoulder pain
- Fatigue
- Pain that improves with activity
- Night pain and disturbed sleep
Some patients also develop enthesitis, which causes inflammation where tendons and ligaments attach to bone. This commonly affects the heels, ribs and pelvis.
Ankylosing spondylitis may also be associated with other inflammatory conditions including:
- Uveitis causing painful red eyes
- Psoriasis
- Inflammatory bowel disease
These associated conditions can provide important diagnostic clues during specialist assessment.
Causes and Risk Factors
Genetic, immune and environmental factors all contribute to the development of ankylosing spondylitis.
Research shows a strong genetic association between ankylosing spondylitis and the HLA B27 gene. However, not everyone carrying the gene develops the condition, and some patients with ankylosing spondylitis are HLA B27 negative.
The condition develops because of abnormal immune system activity causing chronic inflammation, particularly at entheses where tendons and ligaments attach to bone.
Factors associated with ankylosing spondylitis include:
- HLA B27 genetic association
- Family history of spondyloarthritis
- Immune system dysfunction
- Previous infections
- Mechanical stress
- Other inflammatory conditions such as psoriasis or inflammatory bowel disease
Diagnosis should never be excluded based solely on normal blood tests or genetic testing.
Diagnosing Ankylosing Spondylitis
Diagnosis involves assessing symptoms alongside blood tests and imaging to detect spinal inflammation early.
Diagnosing ankylosing spondylitis can be challenging because symptoms may overlap with more common causes of back pain, particularly during the early stages.
A consultant rheumatology assessment will usually involve reviewing symptom patterns, spinal stiffness, joint involvement and inflammatory features that suggest axial spondyloarthritis.
Blood tests may be arranged to assess inflammation markers such as CRP and ESR, alongside HLA B27 testing where appropriate.
Imaging plays an important role in diagnosis and may include:
- X rays to identify structural spinal changes
- MRI scans to detect early inflammation before X ray changes develop
- Ultrasound imaging in selected cases
MRI scans are particularly valuable because they can identify inflammation much earlier, helping avoid delays in diagnosis and treatment.
A specialist led approach allows treatment to begin earlier and helps reduce the risk of long term spinal damage.
Treatment of Ankylosing Spondylitis
Treatment focuses on controlling inflammation, maintaining mobility and preventing long term spinal damage.
There is currently no cure for ankylosing spondylitis, but modern treatments are highly effective at controlling inflammation and improving quality of life.
Treatment plans are tailored to the severity of symptoms and level of inflammation.
Initial treatment commonly includes:
- Non steroidal anti inflammatory medication (NSAIDs)
- Physiotherapy and posture exercises
- Regular movement and stretching programmes
Physiotherapy is a key part of long term management and helps maintain flexibility, posture and spinal mobility.
For patients with more active disease, advanced biologic therapies may be recommended.
These may include:
- TNF inhibitor treatments
- IL 17 inhibitor therapies
- JAK inhibitor medication for selected patients
Modern rheumatology follows a treat to target approach, where treatment is reviewed regularly with the aim of achieving low disease activity or remission.
In some cases, surgery may be considered where joint damage significantly affects mobility or quality of life.
Managing Ankylosing Spondylitis
Exercise, posture management and lifestyle changes play an important role alongside medical treatment.
Staying active is one of the most effective ways to manage ankylosing spondylitis and reduce stiffness over time.
Lifestyle measures that may help include:
- Regular exercise and stretching
- Maintaining good posture
- Physiotherapy guided movement programmes
- Smoking cessation
- Using heat therapy to relieve stiffness
Simple daily movement routines can significantly improve flexibility and reduce discomfort.
Regular follow up also allows treatment to be adjusted as symptoms and disease activity change over time.
Complications if Untreated
Early treatment helps reduce the risk of long term spinal damage and disability.
Without appropriate treatment, ankylosing spondylitis can lead to progressive spinal stiffness and permanent structural changes.
Potential complications may include:
- Spinal fusion
- Reduced mobility
- Chronic pain
- Postural changes
- Increased cardiovascular risk
Early specialist treatment significantly improves long term outcomes and helps preserve mobility and quality of life.
When to See a Specialist
Persistent inflammatory back pain should always be assessed early by a rheumatology specialist.
You should consider specialist assessment if you experience:
- Back pain lasting more than 3 months
- Symptoms beginning before age 45
- Pain improving with movement
- Morning stiffness
- Night pain
- A history of psoriasis, uveitis or inflammatory bowel disease
- A family history of inflammatory arthritis
Early referral significantly improves the chance of achieving long term disease control before structural damage develops.
What Happens at Your Consultation
A detailed specialist assessment helps confirm the diagnosis and guide treatment planning.
Your consultation may include:
- Detailed symptom history
- Spinal and joint examination
- Blood tests and imaging review
- MRI referral if required
- Assessment of inflammatory features
- Discussion of treatment options
- Personalised management plan
You will receive clear consultant led guidance focused on accurate diagnosis and effective long term management.
Why Choose Pure Rheumatology London
Consultant led care focused on early diagnosis and evidence based treatment.
At Pure Rheumatology London, you will be assessed by a consultant rheumatologist with specialist expertise in axial spondyloarthritis and inflammatory arthritis.
You will receive a clear diagnosis, personalised treatment recommendations and access to advanced imaging and modern therapies.
- Rapid access appointments
- MRI access for early diagnosis
- Specialist rheumatology assessment
- Evidence based treatment plans
- Access to advanced therapies
- Ongoing monitoring and long term management
Ankylosing Spondylitis FAQs
Answers to common questions about ankylosing spondylitis, including symptoms, diagnosis and treatment.
Ankylosing spondylitis can become serious if left untreated because chronic inflammation may lead to spinal fusion, reduced mobility and ongoing pain. However, early diagnosis and modern treatment can significantly improve outcomes.
There is currently no cure, but most patients can manage symptoms effectively with medication, exercise and specialist treatment.
MRI scans can detect inflammation before structural damage becomes visible on X rays, making MRI particularly important for diagnosing early axial spondyloarthritis.
There is a strong genetic association with the HLA B27 gene, although not everyone carrying the gene develops the condition.
Symptoms most commonly begin between the ages of 20 and 40, although diagnosis is often delayed for several years.
Treatment may include anti inflammatory medication, physiotherapy, exercise programmes and advanced biologic therapies where appropriate.
Medical Disclaimer and Clinical Guidance
Important information about this page and how treatment decisions are made.
This page is provided for general information only and does not replace a medical consultation. All treatment decisions should be made in discussion with a qualified healthcare professional following a full clinical assessment.
Information on this page is based on recognised clinical guidance, including recommendations from NICE, the British Society for Rheumatology and EULAR.
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