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Ankylosing spondylitis is a chronic inflammatory disease primarily affecting the spine and sacroiliac joints, leading to pain, stiffness, and potential fusion of the vertebrae.
Quick Answer
Ankylosing spondylitis is a chronic inflammatory disease primarily affecting the spine and sacroiliac joints, leading to pain, stiffness, and potential fusion of the vertebrae. Dr. Shree Narayan Yadav (NMC 14227, Experienced clinical practice in internal medicine and rheumatology) evaluates ankylosing spondylitis at Kathmandu Neurology Clinic & Cognitive Center, Durbar Marg, Opposite of Yak & Yeti Hotel, Kathmandu 44600, Nepal — evidence-based, medically reviewed.
Ankylosing spondylitis (AS) is the prototypical axial spondyloarthritis, characterized by chronic inflammation of the sacroiliac joints and spine. It primarily affects young adults, with onset typically between ages 20 and 30, and is more common in males. Early symptoms include insidious onset of low back pain and morning stiffness that improve with activity and worsen with rest. Without treatment, progressive spinal fusion can occur, leading to reduced mobility. HLA-B27 genetic testing and MRI of the sacroiliac joints are important diagnostic tools. Treatment includes NSAIDs as first-line therapy, with biologic agents (TNF inhibitors, IL-17 inhibitors) for refractory disease. Dr. Shree Narayan Yadav (NMC 14227) provides comprehensive spondyloarthritis evaluation.
Diagnosis is based on chronic inflammatory back pain (onset before age 40, insidious, improves with activity, morning stiffness >30 minutes), imaging evidence of sacroiliitis on X-ray or MRI, and HLA-B27 testing. The ASAS classification criteria for axial spondyloarthritis include sacroiliitis on imaging or HLA-B27 with at least two spondyloarthritis features. Blood tests may show elevated CRP and ESR but are not diagnostic.
NSAIDs are first-line therapy and should be used at adequate doses. Regular exercise, physiotherapy, and posture maintenance are essential components. TNF inhibitors (adalimumab, etanercept, infliximab) and IL-17 inhibitors (secukinumab) are indicated for active disease refractory to NSAIDs. Involvement of peripheral joints, enthesitis, and extra-articular manifestations (uveitis, IBD) requires targeted management. Dr. Shree Narayan Yadav (NMC 14227) provides biologic therapy and long-term monitoring.
Management is individualized and discussed with benefits, limitations, and follow-up.
There is no proven prevention for AS. Early diagnosis and consistent treatment, including regular exercise and physiotherapy, help maintain spinal mobility and reduce the risk of fusion. Smoking cessation is recommended as smoking worsens disease outcomes.
No. AS causes inflammatory back pain -- worse at rest, improves with activity, and associated with morning stiffness lasting more than 30 minutes. Regular mechanical back pain typically worsens with activity and improves with rest.
Without treatment, progressive spinal fusion can occur over years. Early and consistent treatment with NSAIDs, exercise, and biologic therapy when indicated can significantly reduce the risk of fusion and preserve spinal mobility.
HLA-B27 is supportive but not required for diagnosis. Most patients with AS are HLA-B27 positive, but the gene can be found in healthy individuals. Diagnosis combines clinical features, imaging, and laboratory findings.
Yes. Regular exercise, especially stretching, swimming, and posture-maintaining activities, is a cornerstone of AS management. It helps maintain spinal flexibility, reduces stiffness, and improves overall function.
Genetics play a strong role — most people with AS carry the HLA-B27 gene, and first-degree relatives have a higher risk. However, carrying the gene alone does not mean you will develop the disease; environmental triggers also contribute.
Comprehensive evaluation for joint pain, swelling, stiffness, and autoimmune conditions by Dr. Shree Narayan Yadav (NMC 14227), Consultant Physician & Joint and Autoimmune Disease Specialist.
Evaluation for inflammatory back pain, sacroiliitis, and spondyloarthritis — morning stiffness, enthesitis, and extra-articular manifestations.
Specialized assessment for joint pain from inflammatory and autoimmune causes — distinct from orthopedic and mechanical joint pain.
Rheumatoid arthritis is a chronic autoimmune disorder characterized by symmetric inflammation of the joints, leading to pain, swelling, stiffness, and potential joint destruction if not treated early.
Gout is a form of inflammatory arthritis caused by deposition of monosodium urate crystals in joints, resulting in sudden, severe attacks of joint pain and swelling.
Psoriatic arthritis is a chronic inflammatory arthritis that develops in some people with psoriasis, affecting joints, entheses, and the spine.
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Reviewed by Dr. Jitendra Prasad Yadav • Last reviewed: 2026-09-04
Content is educational and aligns with standard medical references; individual evaluation may vary. External links provide context and do not imply endorsement.
Doctor — medically reviewed
Dr. Shree Narayan Yadav
Consultant Physician & Joint and Autoimmune Disease Specialist • MBBS (KU), MD-Internal Medicine (NAMS), MSc Clinical Rheumatology (USW, UK) • NMC 14227
This condition guide was medically reviewed by Dr. Shree Narayan Yadav.
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