Yes, Crohn's disease and ankylosing spondylitis (AS) are closely related, both falling under the umbrella of spondyloarthritis, sharing common genetic factors (like the HLA-B27 gene), and often occurring together, with gut inflammation (like Crohn's) preceding or accompanying spine inflammation in many patients, suggesting a strong gut-joint connection.
A recent study found a strong association between increased levels of an inflammatory marker in the gut and the subsequent development of Crohn's disease in those with existing ankylosing spondylitis.
Both UC and Crohn's disease patients had a significantly greater likelihood of having arthritis, asthma, bronchitis, psoriasis, and pericarditis than population controls. An increased risk for chronic renal disease and multiple sclerosis was noted in UC but not Crohn's disease patients.
"B27 disease" occurs in individuals who have ankylosing spondylitis (AS) or preankylosing spondylitis and/or uveitis and are also positive for HLA-B27.
Although only about 7% of people with Crohn's disease are HLA-B27 positive, Dr. Hanauer adds, those who have the variant have a higher chance of also developing AS. “Over 50% of patients with Crohn's disease who are HLA-B27 positive develop ankylosing spondylitis,” Dr. Hanauer notes.
HLA-B27 and Ankylosing Spondylitis
One gene, HLA-B27, is strongly associated with a big family of rheumatic diseases called spondyloarthropathies. It includes: Axial spondyloarthritis. Axial psoriatic arthritis.
Peripheral arthritis tends to be more common among people who have ulcerative colitis or Crohn's disease of the colon. The level of inflammation in the joints generally mirrors the extent of inflammation in the colon.
Seronegative inflammatory spondyloarthropathies such as psoriatic arthritis, reactive arthritis, noninflammatory spondyloarthropathies such as diffuse idiopathic skeletal hyperostosis, and ochronotic arthritis resulting from alkaptonuria can affect the axial skeleton and present with symptoms similar those of ...
The "worst" autoimmune diseases are subjective but often ranked by severity, impact on life expectancy, and organ damage, with top contenders including Giant Cell Myocarditis (deadly heart inflammation), Vasculitis (blood vessel inflammation like GPA), Systemic Lupus Erythematosus (multi-organ attacks), Multiple Sclerosis (nervous system damage), and Type 1 Diabetes (pancreas destruction). These conditions can severely affect quality of life, cause permanent disability, and reduce lifespan if not managed effectively, though rare ones like Giant Cell Myocarditis are acutely fatal.
July 18, 2025
A new peer-reviewed study published in Arthritis & Rheumatology suggests that ivarmacitinib, a new medication known as a selective JAK1 inhibitor, may be a promising treatment for people with active ankylosing spondylitis (AS). The study was a randomized, double-blind clinical trial.
Crohn's disease also can cause problems in other parts of the body. Among these problems are low iron, called anemia, osteoporosis, arthritis, kidney stones, eye problems, and gallbladder or liver disease.
Like Crohn's disease, ulcerative colitis involves inflammation of the gastrointestinal tract. In this condition, however, only the lining of the large intestine, or colon, is affected. Ulcerative colitis causes multiple ulcers to form on the intestinal wall.
Crohn's disease and ulcerative colitis are not autoimmune diseases. In other words, the immune system does not attack the body's own cells.
While it's not common, people with Crohn's are more likely than others to develop rheumatoid arthritis, ankylosing spondylitis, and multiple sclerosis, which are all autoimmune diseases.
Some people with AS also have inflammatory bowel disease (IBD). Symptoms of IBD include: pain, cramps or swelling in the tummy. recurring or bloody diarrhoea.
Early symptoms of ankylosing spondylitis might include back pain and stiffness, especially in the lower back and hips. These symptoms may be worse in the morning or after periods of inactivity. Neck pain and fatigue also are common. Other symptoms include vision changes or eye pain, skin rashes and stomach pain.
Vasculitis: Vasculitis involves inflammation of blood vessels, leading to various symptoms depending on the affected organs. The diagnosis often requires imaging studies and biopsies, making it one of the more challenging autoimmune diseases to identify.
Patients experiencing chronic fatigue related to autoimmune conditions often describe their symptoms as more than just feeling tired during the day. This is significant exhaustion that impacts quality of life and makes it difficult to function on a normal basis.
Ways diet can help improve your condition
The name has recently changed to axial spondyloarthritis (axSpA) based on the 2009 ASAS classification criteria to better include early disease, theoretically before the occurrence of bony structural damage [2]. Initially it mainly affects the sacroiliac joints (SIJ), and, usually later, the spinal column.
When used as prescribed, HUMIRA targets and blocks TNF-alpha, which can help reduce the excess inflammation associated with AS.
Ankylosing spondylitis is more severe than other forms of arthritis because it primarily affects the spine and sacroiliac joints, leading to significant pain, stiffness, and limited mobility. Unlike rheumatoid or psoriatic arthritis, AS causes chronic inflammation and long-term joint damage.
1. Persistent diarrhea. If you're dealing with frequent, loose stools that won't go away, it might be more than a reaction to what you ate last night. “Chronic diarrhea is one of the most common signs of Crohn's disease,” says Dr.
ProUCRO is a complete daily multivitamin specially formulated to support the nutritional health of patients with Crohn's Disease & Ulcerative Colitis. The amount of calcium needed to support nutritional health in Inflammatory Bowel Disease may vary.
Crohn's disease is a long-term condition that causes inflammation of the lining of the digestive system. Inflammation can affect any part of the digestive system, from the mouth to the back passage. But it mostly occurs in the last section of the small intestine (ileum) or the large intestine (colon).