Bones, Joints & Muscles

Ankylosing spondylitis: night-time back pain

An inflammatory spinal rheumatism

Dr. Marc Lefèvre

Rheumatologist

6 min read
Medical illustration of Ankylosing spondylitis: night-time back pain

In simple terms

NSAIDs, anti-TNF, IL-17 inhibitors: progress in ankylosing spondylitis.

A chronic inflammatory disease

Ankylosing spondylitis affects 0.3% of the population, typically young men. Inflammation of sacroiliac joints, spine, sometimes peripheral joints. Strong association with HLA-B27 (80-90%).

Symptoms

Inflammatory low back pain (night-time, morning stiffness >30 min, improves with activity), buttock pain alternating from side to side, enthesitis (Achilles), uveitis, psoriasis or IBD possible.

Diagnosis

Pelvic MRI (sacroiliitis), HLA-B27, CRP. ASAS classification criteria.

Treatments

  • NSAIDs: first-line, often continuous
  • Physical therapy daily: essential to prevent ankylosis
  • Anti-TNF (adalimumab, etanercept): very effective
  • IL-17 inhibitors (secukinumab, ixekizumab) and JAK inhibitors (upadacitinib)

Lifestyle

Quit smoking (worsens progression), regular physical activity (swimming, yoga), preserve good posture.

The words explained

Medical terms used above, in everyday language.

Chronic
A problem that lasts a long time, usually more than three months, and often comes back.
Inflammation
The body's reaction to injury or irritation: redness, swelling, heat or pain.
Symptom
A sign you can feel or see that something is wrong, like pain, tiredness or a rash.
Diagnosis
The moment a doctor identifies which illness is causing your symptoms.
Prevention
Steps taken before a problem starts, to make it less likely.

When should you see a doctor?

  • Your symptoms last more than a few weeks or keep coming back.
  • They get worse quickly, or stop you doing everyday things.
  • You notice sudden pain, breathing trouble, fainting or bleeding — seek urgent care.
  • You already take medication and want to change anything about it.

This article explains general health information. It does not replace advice from your own doctor.

Frequently asked questions

What is Ankylosing spondylitis: night-time back pain?
NSAIDs, anti-TNF, IL-17 inhibitors: progress in ankylosing spondylitis.
What are the main symptoms or signs of Ankylosing spondylitis: night-time back pain?
Common signs vary from person to person. The article above lists the symptoms to watch for, how they progress, and when they need medical attention.
When should you see a doctor for Ankylosing spondylitis: night-time back pain?
See a doctor if symptoms last more than a few weeks, get worse quickly, stop you doing everyday things, or if you notice sudden pain, breathing trouble, fainting or bleeding.