Fibromyalgia and Ankylosing Spondylitis: Understanding the Connection

Living with ankylosing spondylitis (AS) can mean dealing with ongoing pain, stiffness, fatigue, and sleep problems. But sometimes, even when AS inflammation appears to be under control, a person may continue to experience severe pain and fatigue. One possible reason is fibromyalgia.

What Is Fibromyalgia?

Fibromyalgia is a condition that affects the way your nervous system processes pain. The nervous system becomes more sensitive to pain signals, which can make normal sensations feel painful or cause existing pain to feel much severe.

Common symptoms include:

• Widespread body pain

• Increased sensitivity to touch

• Persistent fatigue

• Poor or unrefreshing sleep

• Difficulty concentrating or remembering things, sometimes called “fibro fog”

• Increased sensitivity to everyday physical sensations
  

Fibromyalgia can affect anyone, although it is more commonly diagnosed in women.

How Is Fibromyalgia Linked to Ankylosing Spondylitis?

Ankylosing spondylitis is an inflammatory condition that mainly affects the spine and sacroiliac joints. Fibromyalgia, on the other hand, involves changes in how the nervous system processes pain.

A person can have both AS and fibromyalgia. When widespread pain continues despite little evidence of active inflammation, doctors may consider whether fibromyalgia or another source of pain is contributing to the symptoms.

This can make living with ankylosing spondylitis more complicated. Pain may become more widespread, fatigue may increase, and sleep problems may become more noticeable.

Why Can Pain Continue When Tests Look Normal?

This is one of the most confusing aspects of fibromyalgia for many patients.

Blood tests and imaging can help doctors identify inflammation or structural changes, but they do not directly measure how the nervous system processes pain. Therefore, normal test results do not mean that a person's pain is imaginary.

The symptoms are real and deserve proper medical evaluation. If you notice that your usual ankylosing spondylitis symptoms have changed, for example, your pain has become more widespread, or your fatigue and sleep problems have increased, tell your healthcare professional.

Managing Fibromyalgia Alongside AS

Managing fibromyalgia alongside AS usually focuses on improving overall function and quality of life rather than relying only on pain medicines.

Depending on the individual, a healthcare professional may recommend the following:

• Gentle and gradual physical activity

• Physiotherapy and stretching

• Better sleep habits

• Pain-management techniques

• Psychological support or cognitive behavioral therapy

• Medicines specifically selected for certain fibromyalgia symptoms

• Regular monitoring of AS activity

A multidisciplinary approach involving a rheumatologist, physiotherapist, pain specialist, or other healthcare professionals may be helpful.

What Can Patients Do?

Keeping a simple symptom diary can help you identify patterns in pain, sleep, activity, and fatigue. You can record when symptoms become worse, what activities you performed, how well you slept, and whether anything helped reduce your discomfort.

Gentle movement may be more helpful than prolonged complete rest for many people, but exercise should always be adapted to your abilities and medical condition.

Most importantly, don't ignore persistent or changing symptoms. If your pain pattern has changed or your symptoms are not improving, discuss them with your healthcare professional.

You Don't Have to Manage AS Alone

Living with ankylosing spondylitis can sometimes feel isolating, particularly when pain and fatigue continue despite treatment. Treatment by a rheumatologist, connecting with people who understand the challenges of a chronic condition can provide encouragement, practical experiences, and emotional support.

An Ankylosing Spondylitis Support Group can allow patients to learn from others, discuss everyday challenges, and better understand different approaches to managing life with AS. Support communities should complement professional medical care and not replace it.