What Is Ankylosing Spondylitis? Symptoms, Causes, and Treatment

Ankylosing spondylitis is a chronic, inflammatory rheumatic disease that primarily affects the spine and the sacroiliac joints. Over time, it can lead to reduced spinal mobility, postural changes, and a significant decline in quality of life. Early diagnosis and proper treatment planning play a critical role in slowing disease progression.

Ankylosing spondylitis is not only a joint disease. In the long term, it can affect the musculoskeletal system, respiratory capacity, and daily functioning. For this reason, physical therapy and rehabilitation interventions play a fundamental role in disease management alongside medical treatment.

What Is Ankylosing Spondylitis?

Ankylosing spondylitis is a chronic inflammatory disease that occurs when the immune system targets the spine and the joints close to the spine. The most commonly affected area is the sacroiliac joints between the lower back and the pelvis. Over time, fusion may develop between the bones of the spine.

The main characteristic of the disease is persistent and progressive inflammation. If this process is not controlled, it may lead to loss of spinal flexibility, a forward-bent posture, and permanent limitations in movement. Therefore, ankylosing spondylitis is considered a systemic rheumatic disease that should be recognized early.

What Causes Ankylosing Spondylitis?

Although the exact cause of ankylosing spondylitis is unknown, it is thought that genetic and immune system factors play a combined role in its development. Environmental triggers may contribute to disease onset in individuals with a genetic predisposition.

While the immune system normally protects the body, in ankylosing spondylitis it mistakenly identifies joint tissues as foreign and triggers inflammation. This process results in chronic inflammation, particularly in the spine and major joints.

Genetic Predisposition and the HLA-B27 Relationship

A large proportion of patients with ankylosing spondylitis test positive for the genetic marker called HLA-B27. However, the presence of this gene alone does not mean a person has the disease. HLA-B27 positivity can also be found in healthy individuals.

Genetic predisposition increases the risk of an abnormal immune response. In people with a family history, symptoms such as back pain and morning stiffness should be evaluated more carefully.

The Immune System and Environmental Factors

Immune system dysregulation is one of the key mechanisms of ankylosing spondylitis. Infections, prolonged stress, and certain environmental factors are thought to trigger immune responses.

These triggers may initiate an inflammatory process in genetically predisposed individuals. As the process becomes chronic, joint damage and functional loss may occur.

What Are the Symptoms of Ankylosing Spondylitis?

Symptoms of ankylosing spondylitis usually develop gradually and worsen over time. Since early symptoms may be confused with mechanical low back pain, diagnosis can be delayed. However, when the characteristic features are evaluated carefully, distinguishing findings become apparent.

Symptoms may not be limited to the spine. Large joints such as the hips, knees, and shoulders may also be involved, and in some patients, the eyes, intestines, or skin may be affected.

Early-Stage Symptoms

Symptoms in the early stage are generally associated with inflammatory back pain. This pain does not improve with rest and tends to ease with movement.

• Morning stiffness: Stiffness in the lower back and spine lasting longer than 30 minutes, especially in the morning

• Night pain: Low back and hip pain that increases during the second half of the night

• Relief with movement: Pain decreases with exercise and worsens with rest

• Young age at onset: Most commonly seen between the ages of 20 and 40

Advanced-Stage Symptoms

As the disease progresses, structural changes develop in the spine and mobility becomes markedly limited.

• Restricted spinal movement: Difficulty bending forward and rotating

• Postural changes: Development of a forward-bent, hunched posture

• Reduced chest expansion: Decreased widening of the chest while breathing

• Chronic fatigue: A sense of tiredness related to ongoing inflammation

What Is the HLA-B27 Test?

The HLA-B27 test is a genetic blood test used in the diagnosis of ankylosing spondylitis. It checks for the presence of a tissue antigen related to the immune system. A positive result is considered to indicate an increased risk of the disease.

However, HLA-B27 positivity alone does not establish a diagnosis. It must be evaluated together with clinical symptoms, imaging findings, and other laboratory results. A negative result does not completely rule out the disease.

How Is Ankylosing Spondylitis Diagnosed?

Diagnosis of ankylosing spondylitis is made by considering clinical evaluation, laboratory tests, and imaging methods together. Early diagnosis is one of the most important factors that positively influences the course of the disease.

In young individuals with long-lasting back pain, inflammatory characteristics should be questioned and further evaluation should be planned.

Methods Used in Diagnosis

• Medical history and physical examination: Assessment of morning stiffness, movement limitation, and posture

• Blood tests: HLA-B27, CRP, and erythrocyte sedimentation rate values

• Imaging: Evaluation of the sacroiliac joints with magnetic resonance imaging (MRI)

• X-ray: Detection of advanced-stage bone changes

How Is Ankylosing Spondylitis Treated?

Treatment of ankylosing spondylitis aims to control inflammation, reduce pain, and prevent functional loss rather than completely eliminating the disease. The treatment plan is tailored to the stage of the disease, symptom severity, and the individual’s daily life needs.

An effective approach is not limited to medication alone. For long-term success, physical therapy and rehabilitation, exercise programs, and lifestyle modifications must be integrated into the treatment plan.

Medical Treatment

Medications are used to suppress inflammation and control pain in ankylosing spondylitis. However, medication alone is not sufficient to stop structural damage.

• Non-steroidal anti-inflammatory drugs (NSAIDs): Reduce pain and stiffness

• Biologic agents: Target the immune system in advanced cases

• Corticosteroids: Used in limited situations and for short periods

Medical treatment should always be carried out under specialist supervision, and the patient’s physical capacity and side effect risk should be monitored regularly.

The Role of Physical Therapy and Rehabilitation in Ankylosing Spondylitis

In ankylosing spondylitis management, physical therapy and rehabilitation are among the main treatment components that directly influence the course of the disease. The goal is not only to reduce pain, but also to preserve spinal mobility, correct posture, and sustain daily life functions.

A consistent and properly planned physical therapy program can reduce spinal stiffness and slow down bone fusion. Therefore, physical therapy should be included in the treatment plan starting from the early stages.

Main Goals of Physical Therapy

The physical therapy and rehabilitation process is planned individually and shaped according to the stage of the disease.

• Preserving spinal range of motion: Maintaining flexibility and mobility

• Increasing muscle strength: Strengthening the muscles that support posture

• Ensuring postural control: Preventing a forward-bent posture

• Protecting respiratory capacity: Increasing chest mobility

Physical Therapy Methods Used

Physical therapy programs include manual therapy, exercise, and supportive modalities.

• Mobilization techniques: Practices aimed at increasing spinal and joint mobility

• Stretching exercises: Help reduce muscle tightness

• Postural exercises: Improve postural awareness

• Breathing exercises: Support the preservation of lung capacity

When maintained regularly over the long term, these interventions provide significant functional benefits.

The Importance of Exercise in Ankylosing Spondylitis

Exercise is not an option for individuals with ankylosing spondylitis; it is an essential part of treatment. Physical inactivity may accelerate disease progression and increase spinal stiffness.

Exercise programs should be planned according to the patient’s age, disease stage, and physical capacity. Uninformed or improper movements may cause harm rather than benefit.

Recommended Types of Exercise

• Stretching exercises: Reduce daily stiffness

• Spinal mobility exercises: Preserve range of motion

• Swimming: Provides safe movement by reducing joint load

• Breathing exercises: Improve chest flexibility

Learning exercises under the guidance of a physiotherapist and maintaining regular follow-up increases treatment success.

Daily Life Recommendations for Patients with Ankylosing Spondylitis

Ankylosing spondylitis is managed not only through treatment sessions but also through daily lifestyle habits. Proper lifestyle choices can significantly reduce symptom severity.

Prolonged sitting, incorrect sleeping positions, and a sedentary lifestyle may worsen symptoms. Therefore, daily routines should be organized consciously.

Posture and Ergonomics Recommendations

• Avoid staying in the same position for a long time

• Use an ergonomic chair in the workplace

• The computer screen should be at eye level

• Take short movement breaks throughout the day

Sleep and Rest Routine

• Prefer a medium-firm mattress

• Pillow height should be adjusted so it does not disrupt neck alignment

• Avoid sleeping on your stomach

Continuity of Rehabilitation for Patients with Ankylosing Spondylitis

Ankylosing spondylitis is a chronic disease rather than a periodic condition. Therefore, physical therapy and rehabilitation must be continuous. Stopping treatment completely when symptoms decrease may lead to long-term functional loss.

Regular follow-ups, updating exercise programs, and monitoring physical capacity help keep the disease under control. Rehabilitation focuses not only on symptoms but also on quality of life.

What Are the Recommendations for Patients with Ankylosing Spondylitis?

Living with ankylosing spondylitis does not mean passively accepting the disease. With accurate information, regular follow-up, and conscious lifestyle habits, the impact of the disease on daily life can be greatly reduced. At this point, the patient’s active participation in treatment is extremely important.

Lifestyle choices that support physical therapy and rehabilitation play a decisive role in protecting spinal health. Small but sustainable habit changes can make a major long-term difference.

Make Regular Physical Activity Part of Your Life

For individuals with ankylosing spondylitis, physical inactivity is one of the biggest enemies. Avoiding movement due to fear of pain accelerates spinal stiffness and functional loss.

• At least 20–30 minutes of targeted exercise should be done daily

• Exercises should be planned to reduce morning stiffness

• One should not go beyond the program recommended by the physical therapy specialist

• Exercise programs should be updated at regular intervals

Develop Postural Awareness

Incorrect postural habits can cause spinal deformities to develop faster in ankylosing spondylitis. Gaining postural awareness in daily life is essentially a continuation of rehabilitation.

• When standing, shoulders should be back and the head should remain upright

• Back and lumbar supports should be used during prolonged sitting

• Attention should be paid to bending forward while using phones and computers

Protect Respiratory Capacity

As ankylosing spondylitis progresses, chest wall mobility may decrease. This limits breathing capacity. Breathing exercises are effective in reducing this risk.

• Deep diaphragmatic breathing exercises should be practiced regularly

• Sports such as swimming that actively engage the chest should be preferred

• Breathing exercises must be included in the physical therapy program

Do Not Overlook the Psychological Burden

Chronic diseases create not only physical but also psychological burdens. Persistent pain, limited movement, and uncertainty can reduce motivation.

For this reason, seeking psychological support when needed should be seen as a natural part of treatment. Psychological resilience directly affects adherence to treatment.

Access to Physical Therapy and Rehabilitation with Happ Health

In chronic musculoskeletal diseases such as ankylosing spondylitis, meeting the right specialist at the right time determines the success of treatment. Happ Health provides access to healthcare professionals specialized in physical therapy and rehabilitation through online doctor consultations, home healthcare services, and referral solutions.

Thanks to processes planned according to individual needs, it becomes easier to continue treatment regularly and maintain specialist support. To avoid postponing your health and to protect your quality of life, you can benefit from holistic solutions.