Ankylosing spondylitis (AS) is a chronic inflammatory condition primarily affecting the spine and sacroiliac joints, causing pain, stiffness, and, over time, potential spinal fusion. It is most common in young men aged 20 to 40. At DR+, our GPs with specialised training in pain management provide a comprehensive assessment for ankylosing spondylitis to evaluate symptoms, disease activity, and functional impact. Based on this, we develop a personalised, non-surgical treatment plan aimed at relieving pain, reducing inflammation, maintaining spinal mobility, and supporting long-term condition management.
Ankylosing spondylitis (AS) is a chronic inflammatory condition that primarily affects the spine and the sacroiliac joints, where the spine meets the pelvis. Characterised by the fusion of spinal vertebrae and inflammation of the joints, this condition can lead to a reduction in spinal mobility and, in severe cases, complete spinal rigidity.
The primary symptom of AS is chronic pain and stiffness in the lower back and hips, especially noticeable in the morning or after periods of inactivity. This discomfort improves with exercise and worsens with rest.
Other symptoms include:
In other parts of the body, such as the shoulders, ribs, heels, and small joints of the hands and feet.
Due to the body’s response to inflammation.
Leading to a hunched-forward posture in advanced cases.
In some cases AS can affect the eyes, causing a condition known as uveitis, characterised by redness, pain, and blurred vision.
Seek urgent assessment if you develop sudden eye pain, redness, and visual changes: this may indicate uveitis, a serious eye complication of AS requiring immediate ophthalmology review. Also seek prompt care if you experience sudden worsening neurological symptoms, severe neck or back pain following a minor fall, or any new bowel or bladder changes
Consult one of our DR+ today for a detailed consultation & personalised treatment plan.
The exact cause of AS is not fully understood, but studies suggest that the HLA-B27 gene plays a role. While not everyone with this gene develops AS, the majority of people with AS have this gene.
Other factors that may be associated with the development of AS are:
Ankylosing spondylitis has a strong genetic component. Around 90% of AS patients carry the HLA-B27 gene. However, having the gene does not guarantee developing AS: only about 5% of HLA-B27 carriers develop the condition. Other environmental and immune factors also play a role.
AS is classified as a spondyloarthropathy: an autoimmune condition in which the immune system mistakenly attacks the joints of the spine and sacroiliac region, triggering chronic inflammation. Over time, repeated inflammation can cause new bone formation and eventual fusion of spinal segments (ankylosis).
While the exact trigger for AS onset is not fully understood, gut microbiome imbalance, certain infections, and environmental stressors are thought to contribute to disease activation in genetically susceptible individuals.
Though there is no cure for AS, treatments can help manage symptoms and prevent complications.
This involves the use of medications such as Non-Steroidal Anti-Inflammatory Drugs (NSAIDs), opioids, and other specialised medications designed for pain management. The type and dosage are tailored to the individual’s condition and medical history.
Minimally invasive treatments aim to effectively relieve common pain conditions by targeting pain sources.
For chronic pain conditions originating from spinal issues, Neurospan can be performed by our team of pain specialists from Singapore Paincare Center.
Not all cases need immediate medical attention, but some situations do. See a DR+ doctor if your condition:
It is not possible to prevent AS, due to its nature.
Certain strategies can help those with AS reduce the risk of complications and improve quality of life. This includes regular exercise to help maintain joint flexibility and reduce stiffness, and good posture practices to prevent spinal deformity and reduce strain on the back. Individuals can also better manage AS by quitting smoking, having a balanced diet rich in calcium and vitamin D, and managing their stress levels.
It is a type of arthritis that affects the spine and sacroiliac joints.
Ankylosing spondylitis differs from other types of arthritis primarily in its target areas and progression. Unlike many forms of arthritis that affect peripheral joints like the hands and knees, ankylosing spondylitis predominantly impacts the spine and sacroiliac joints. This condition also tends to affect younger individuals, typically appearing in late adolescence or early adulthood. Furthermore, ankylosing spondylitis can lead to spinal fusion over time, resulting in a significant reduction in spinal mobility and flexibility, which is less common in other types of arthritis.
Currently, there is no cure for AS. With appropriate treatment, the symptoms can be managed, and progression of the disease can be slowed.
Diagnosis is based on a combination of symptoms and physical examination. Some cases may require imaging tests such as MRI, and blood tests, including testing for the HLA-B27 gene.
Yes, regular exercise, maintaining a healthy weight, practising good posture, quitting smoking, and following a balanced diet can contribute to better management of the condition.
There is a genetic component to AS, associated with the HLA-B27 gene. Having family members with the condition increases the risk, but not everyone with the genetic marker develops the disease.
Yes, while AS is more common in men, women can also develop the condition, though their symptoms are often less severe.
In most cases, AS does not impact life expectancy, especially with management and treatment.
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