Ankylosing spondylitis (AS), a type of arthritis, primarily affects the spine, causing inflammation in the spinal joints and ligaments that can lead to severe pain and stiffness. Over time, this inflammation may cause the vertebrae to fuse, resulting in a rigid and inflexible spine. This progressive disease, also called axial spondyloarthritis, can impact daily activities, posture, and quality of life. Though there’s no cure, various treatments can help manage symptoms and improve mobility. Here, we’ll explore the symptoms, causes, risk factors, and some effective management strategies.
What Is Ankylosing Spondylitis?
Ankylosing spondylitis is a chronic inflammatory disease that affects not only the spine but also peripheral joints like the hips, shoulders, knees, and even the ribs. Typically, the spinal joints and ligaments support movement and flexibility, but AS causes them to become inflamed, leading to pain and stiffness. In advanced cases, new bone forms as part of the body’s healing response, causing sections of the spine to fuse, which results in a hunched or stooped posture. AS can also affect other body systems, leading to eye inflammation (uveitis), skin conditions like psoriasis, and gut diseases such as inflammatory bowel disease (IBD).
The most common symptom of ankylosing spondylitis is persistent lower back and hip pain that may worsen during rest or inactivity. Many people experience more pain at night or after long periods of sitting, but the pain often improves with movement and exercise. AS symptoms can vary widely and may include:
Lower back and hip pain: Often worse in the morning and improves throughout the day.
Stiffness: Especially noticeable in the spine and hips, impacting flexibility.
Joint pain: Pain and inflammation can extend to the shoulders, knees, ribs, and feet.
Difficulty breathing: Caused by stiffness in the rib cage, which limits lung expansion.
Eye inflammation: Uveitis, causing red eyes, light sensitivity, and vision changes.
Fatigue: Chronic inflammation can lead to persistent tiredness.
Digestive issues: Some people may experience abdominal pain and changes in bowel habits.
Ankylosing spondylitis often progresses in “flares,” where symptoms become more intense, followed by periods of remission. It’s essential to monitor these symptoms closely and seek medical advice when pain or stiffness worsens.
AS can affect anyone, though certain factors may increase the likelihood of developing the condition:
Genetics: Most people with AS carry the HLA-B27 gene, though not everyone with the gene develops the disease.
Family history: A family history of AS can elevate the risk.
Age: Symptoms typically begin before age 45, though they can start as early as adolescence.
Related conditions: Those with Crohn’s disease, ulcerative colitis, or psoriasis may have a higher risk.
Research has shown that the HLA-B27 gene is closely linked to AS, though other genetic and environmental factors also play a role. Studies continue to investigate additional genetic variations to better understand AS.
In severe cases, ankylosing spondylitis can lead to complications that extend beyond the spine:
Spinal fusion: New bone formation causes vertebrae to fuse, leading to a loss of spinal flexibility and a fixed posture.
Restricted lung capacity: Fusion in the rib cage can limit lung expansion, making deep breaths challenging.
Compression fractures: Weakened vertebrae increase the risk of fractures, potentially pressing on spinal nerves.
Heart issues: Inflammation in AS can enlarge the aorta, the body’s largest artery, affecting heart function.
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