Could Your Back Pain Signal Non-Radiographic Axial Spondyloarthritis?

Understanding Non-Radiographic Axial Spondyloarthritis

There are certain health conditions where symptoms clearly point to a specific diagnosis. For example, heartburn and regurgitation often indicate gastroesophageal reflux disease (GERD), while headaches, nausea, and sensitivity to noise may suggest migraines. However, not all medical conditions present with such clear-cut symptoms. This can lead to confusion or missed diagnoses if individuals don’t communicate all their symptoms to their healthcare providers.

One such condition is non-radiographic axial spondyloarthritis (nr-axSpA). While lower back pain is the most common symptom, it can also cause light sensitivity, skin issues, and gastrointestinal problems—symptoms that may seem unrelated. Recognizing these signs is crucial for early detection and effective management of the condition.

What Is nr-axSpA?

To understand nr-axSpA, it's helpful to first learn about ankylosing spondylitis (AS), a related inflammatory disease. AS affects the spine, lower back, and sacroiliac joints, causing chronic pain and stiffness. The key difference between AS and nr-axSpA is that people with AS show visible changes on X-rays, whereas those with nr-axSpA do not. This is because the damage in nr-axSpA isn't severe enough to be detected through standard imaging. Some individuals with nr-axSpA may eventually develop AS if the condition progresses.

Like other autoimmune diseases such as rheumatoid arthritis and lupus, nr-axSpA occurs when the immune system mistakenly attacks the body. “Your body has an inflammatory process to fight off infections, but sometimes there’s misregulation of your immune system and it starts to attack your body,” explains Dr. Chris Morris, a rheumatologist based in Tennessee.

Common Symptoms of nr-axSpA

The primary sign to watch for is persistent lower back pain that lasts for months without an obvious cause. This type of pain, known as inflammatory back pain, tends to improve with activity and worsen with inactivity. It is often most severe in the morning.

However, additional symptoms may also indicate nr-axSpA. These include:

• Eye sensitivity to light: Some people with nr-axSpA may develop uveitis, an inflammation of the eye that causes discomfort in bright light, along with eye irritation or pain.
• Skin issues: Nr-axSpA can be associated with psoriasis, which causes red, scaly patches on the scalp, elbows, and knees.
• Gastrointestinal problems: Inflammatory bowel diseases such as Crohn’s disease or ulcerative colitis may occur alongside nr-axSpA, leading to symptoms like diarrhea, stomach pain, cramping, or loss of appetite.

Diagnosing nr-axSpA

Because nr-axSpA does not show up on X-rays, diagnosing it can be challenging. Doctors rely heavily on clinical evaluation, looking for specific patterns of symptoms and connecting them to potential causes.

A blood test for the HLA-B27 antigen can be a useful indicator, but it’s not foolproof. Many people who carry this antigen never develop nr-axSpA, and some individuals with the condition test negative for it. Therefore, it's essential to report all symptoms to your doctor, including persistent back pain and any other related signs.

Unfortunately, patients often see different specialists for separate symptoms and fail to mention their back pain. This can delay diagnosis and treatment. Early identification is critical, as timely intervention can significantly improve outcomes and slow disease progression.

Managing nr-axSpA

While there is no cure for nr-axSpA, there are several treatment options available to manage symptoms and reduce inflammation. Physical therapy is often recommended to maintain mobility and flexibility in the spine and neck. Doctors may also prescribe nonsteroidal anti-inflammatory drugs (NSAIDs), which can help relieve pain and reduce inflammation.

If NSAIDs are not effective, biologic therapies may be considered. These medications target specific parts of the immune system to reduce inflammation. Treatment plans vary from person to person, which is why it’s important to work with a rheumatologist who can tailor care to individual needs.

With proper management, many people with nr-axSpA can lead normal, healthy lives. Early diagnosis and consistent treatment are key to long-term success. If you’re experiencing symptoms that could be linked to nr-axSpA, don’t hesitate to discuss them with your doctor. Open communication is the first step toward effective care.