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Ankylosing spondylitis

Ankylosing spondylitis is a form of painful, ongoing joint inflammation (chronic inflammatory arthritis) that primarily affects the spine.  Early symptoms of ankylosing spondylitis typically begin between the ages of 15 and 30. Most commonly, affected individuals first experience chronic back pain and stiffness. This pain worsens with rest or inactivity, and tends to be relieved with physical activity or exercise.

Description

Ankylosing spondylitis is a form of painful, ongoing joint inflammation (chronic inflammatory arthritis) that primarily affects the spine.  Early symptoms of ankylosing spondylitis typically begin between the ages of 15 and 30. Most commonly, affected individuals first experience chronic back pain and stiffness. This pain worsens with rest or inactivity, and tends to be relieved with physical activity or exercise.

Pain in ankylosing spondylitis results from inflammation of the joints between the pelvic bones (the ilia) and the base of the spine (the sacrum). These joints are called sacroiliac joints, and inflammation of these joints is known as sacroiliitis. The inflammation gradually spreads to the joints between the vertebrae, eventually involving the whole spine, causing a condition called spondylitis. Over time, back movement gradually becomes limited as the bones of the spine (vertebrae) fuse together. This progressive bony fusion is called ankylosis. These fused bones are prone to fracture.

Ankylosing spondylitis can involve other joints as well, including the shoulders, hips, and, less often, the knees. As the disease progresses, it can affect the joints between the spine and ribs, restricting movement of the chest and making it difficult to breathe deeply. 

Ankylosing spondylitis affects the eyes in more than 30 percent of cases, leading to episodes of eye inflammation called acute iritis. Acute iritis typically affects one eye at a time and causes eye pain and increased sensitivity to light (photophobia). Rarely, ankylosing spondylitis can also cause serious complications involving the heart, lungs, and nervous system. Six to 10 percent of people with ankylosing spondylitis have additional inflammatory disorders such as psoriasis, which affects the skin, or ulcerative colitis or Crohn's disease, which both affect the digestive tract.

Inheritance patterns

The source lists the following possible inheritance patterns: Pattern unknown. More than one pattern can apply in different cases.

Other names

axial spondylarthritis

Bechterew disease

Marie-Struempell disease

SpA

Spondylarthritis ankylopoietica

Spondylitis ankylopoietica

spondyloarthritis

Spondyloarthritis ankylopoietica

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Ankylosing spondylitis is a chronic inflammatory arthritis. It mainly affects the lower back but can affect the rest of the spine. Other joints and other parts of the body are sometimes affected. What is ankylosing spondylitis. Ankylosing spondylitis (AS) is a persistent (chronic) inflammatory arthritic disease. The word ankylosing means joining.

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It is an uncommon infection but very serious. Emergency treatment in hospital is needed. Ankylosing spondylitis Ankylosing spondylitis is a form of arthritis. It mainly affects the lower back. Other joints and other parts of the body are sometimes affected. Treatment includes regular exercise and anti-inflammatory medicines. The severity of.

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This leaflet summarises the most common causes of joint pain, and discusses when you should seek help if you have joint pain. Fibromyalgia. Ankylosing spondylitis. Fibromyalgia Causes pains and tenderness in many areas of the body, as well as tiredness and other symptoms, including memory loss ... Ankylosing spondylitis This is a form of.

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Back and spine pain

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This leaflet gives some general information about the back and back pain. It will also direct you to pages with more detailed information on the different conditions that can cause back pain. It can occasionally affect the spine. Ankylosing spondylitis is a form of arthritis that mainly affects the spine: It can affect other joints and other parts.

Further reading and references

Article history

The information on this page is written and peer reviewed by qualified clinicians.
  • 17 Sept 2024 | Latest version
  • 1 Mar 2022 | Originally published

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