Seven Years of Back Pain — And the Diagnosis That Changed Everything

How inflammatory back pain can hide behind normal blood tests

For seven years, back pain had become part of his life.

It started when he was only 13 years old. What began as pain in his lower back and right hip gradually became something he simply learned to live with. He saw different doctors, tried one anti-inflammatory medication after another, and underwent numerous blood tests — yet no clear explanation emerged.

By the age of 20, he had almost stopped believing anyone would find an answer.

When his mother first came to our clinic, she brought a thick folder filled with years of investigations. Like many parents, she refused to give up, even when her son had begun to lose hope.

What she brought wasn't just a file — it was seven years of unanswered questions.

When Normal Blood Tests Don't Tell the Whole Story

One of the biggest misconceptions in medicine is that normal blood tests always mean there is no inflammatory disease.

In reality, many patients with axial spondyloarthritis have completely normal inflammatory markers such as ESR and CRP. This is one of the reasons the diagnosis is often delayed for years.

The real answer was not in the blood tests. It was already visible on his imaging.

The scans showed sacroiliitis — inflammation of the sacroiliac joints, which connect the spine to the pelvis. This is one of the hallmark features of axial spondyloarthritis.

The Second Visit

When he returned to the clinic, he came in himself.

He was limping.

His right hip pain had become much worse, and imaging showed active inflammation together with moderate structural damage to the hip joint.

Hip involvement is recognised as a marker of more severe axial spondyloarthritis, making early diagnosis especially important.

Choosing the Right Treatment

Current treatment guidelines generally recommend NSAIDs as first-line therapy for axial spondyloarthritis. Conventional medications such as methotrexate are usually more helpful for peripheral joints than for inflammation in the spine.

Because biologic therapy was financially out of reach for this family, and because his hip arthritis represented significant peripheral joint involvement, we decided to begin low-dose methotrexate alongside NSAIDs.

He returned after only one month. The limp had almost disappeared.

This case reminds us that while clinical guidelines should guide our decisions, thoughtful medical care also requires individualised judgment. Every patient is different — a theme we explore in how clinical guidelines and clinical judgement work together and how I choose the right treatment.

Why Is Axial Spondyloarthritis Often Diagnosed Late?

• Normal blood tests despite active disease.
• Early X-rays may appear normal.
• Symptoms are often mistaken for mechanical back pain.
• The disease commonly begins during the teenage years or early adulthood.

What Is Axial Spondyloarthritis?

Axial spondyloarthritis is a chronic inflammatory disease affecting the sacroiliac joints and spine. It may also involve the hips, knees, eyes, skin, or gastrointestinal tract. Unlike ordinary mechanical back pain, it is caused by immune-mediated inflammation and requires different treatment.

When Should You Suspect Inflammatory Back Pain?

Typical warning signs include:

• Back pain beginning before age 40.
• Improvement with movement rather than rest.
• Morning stiffness lasting more than 30 minutes.
• Pain during the second half of the night.
• Good response to NSAIDs.

Key Takeaways

• Normal blood tests do not rule out inflammatory arthritis.
• MRI may detect disease before X-rays become abnormal.
• Persistent back pain in young adults deserves careful evaluation.
• Early diagnosis can prevent permanent joint damage.
• Individualised care remains fundamental to good medicine.

Frequently Asked Questions

Can you have axial spondyloarthritis with completely normal blood tests?

Yes. Normal CRP and ESR do not rule out active disease and are a common reason for delayed diagnosis.

Is a positive HLA-B27 test needed for diagnosis?

No. HLA-B27 supports the diagnosis but is not required. Clinical features and imaging are more important.

Can MRI diagnose the disease earlier than X-rays?

Yes. MRI can detect inflammation years before structural changes become visible on plain X-rays.

Can axial spondyloarthritis affect the hip?

Yes. Hip involvement is associated with more severe disease and may influence treatment decisions.

What is the usual treatment?

NSAIDs are usually first-line. Biologic therapies are recommended when needed, while methotrexate may have a role in peripheral joint involvement.

How long does treatment take to work?

It depends on the medication. Methotrexate often takes two to three months, although individual responses vary.

Can teenagers develop axial spondyloarthritis?

Yes. Symptoms often begin during adolescence or early adulthood.

Is chronic back pain always caused by a slipped disc?

No. Persistent inflammatory-pattern back pain should prompt assessment by a rheumatologist.

When should I see a rheumatologist?

If back pain lasts more than three months, begins before age 40, improves with activity, and is associated with prolonged morning stiffness.

Our Philosophy

At Health Call Clinic, we believe every patient deserves individualised care. Clinical guidelines provide an invaluable framework, but thoughtful clinical judgment, careful listening, and personalised decisions remain at the heart of good medicine. You can read more about why we practice medicine this way.

Author's note: This story is shared with the permission of the patient and his family. All identifying details have been removed or altered to protect privacy; the clinical course and lessons described remain true to the case.