Autoimmune
Ankylosing Spondylitis
About Ankylosing Spondylitis
Ankylosing spondylitis (AS) is a chronic inflammatory disease primarily affecting the spine. It can lead to severe, chronic pain and discomfort, and in more advanced cases, new bone formation can cause sections of the spine to fuse.
Common Symptoms
- Chronic back pain, especially in the lower back and hips
- Stiffness, particularly in the morning or after periods of inactivity
- Reduced flexibility in the spine
- Pain in other joints, such as the shoulders, knees, or ankles
- Fatigue
- Inflammation of the eyes (uveitis)
- Reduced range of motion in the neck
- Bowel inflammation
- Heel pain
Diagnosis
Diagnosis typically involves a review of symptoms and medical history, a physical examination to assess spine flexibility and pain, and imaging tests such as X-rays or MRI to look for characteristic bone changes. Blood tests may also be conducted to check for inflammatory markers and the HLA-B27 gene, though the gene's presence alone does not confirm AS.
Causes
The exact cause of ankylosing spondylitis is not fully understood, but it is believed to involve a combination of genetic and environmental factors. A strong genetic link exists with the HLA-B27 gene, which is found in a majority of people with AS, though not everyone with the gene develops the condition.
Treatment Overview
Conventional approaches to managing ankylosing spondylitis often include medications like nonsteroidal anti-inflammatory drugs (NSAIDs) to reduce pain and inflammation, and biologic medications (e.g., TNF inhibitors, IL-17 inhibitors) to target specific inflammatory pathways. Physical therapy and regular exercise are commonly suggested to help maintain spinal flexibility and reduce stiffness. Some individuals explore complementary approaches, such as acupuncture or dietary changes, alongside conventional care.
Prognosis & Outlook
The prognosis for individuals with ankylosing spondylitis can vary widely. While some may experience mild symptoms with little functional impact, others may face more significant pain, stiffness, and potential spinal fusion over time. Early diagnosis and consistent management may help slow disease progression and improve long-term outcomes for many.
Types & Variants
Non-radiographic axial spondyloarthritis (nr-axSpA)
Patients have clinical symptoms of ankylosing spondylitis, but damage to the sacroiliac joints is not yet visible on X-rays, though it may be seen on an MRI.
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