Have you ever experienced pain and stiffness in your lower back? It could indicate an autoimmune disease that specifically affects the sacroiliac joint. The sacroiliac joint is located in the lower back and connects the spine to the hip bones, making it vulnerable to various autoimmune conditions.
Autoimmune diseases are caused when the body’s immune system mistakenly attacks healthy tissue. Some common autoimmune disorders that affect the sacroiliac joint include:
• Ankylosing spondylitis: This inflammatory Arthritis affects the spine and sacroiliac joints, causing pain, stiffness, and swelling.
• Psoriatic Arthritis: This type of inflammatory Arthritis can affect any joint in the body, including the sacroiliac joint. It often causes pain, swelling, and stiffness around affected joints.
• Reactive Arthritis: Caused by an infection in another part of the body, this type of inflammatory Arthritis can cause pain and swelling in one or more joints, including the sacroiliac joint.
• Lupus: This autoimmune disease can affect many body parts, including skin, joints, heart, lungs, kidneys, and brain. It can cause inflammation in any joint, including the sacroiliac joint.
If you experience pain or discomfort in your lower back or other areas, you must speak with your doctor as soon as possible to determine if an autoimmune condition is present. Early diagnosis is critical for successful treatment outcomes!
What is Ankylosing Spondylitis and How Does it Affect the SI Joint?
One autoimmune disease that explicitly affects the SI joint is ankylosing spondylitis (AS). This type of inflammatory Arthritis causes pain and stiffness in the spine, hips, shoulders, neck, and other joints. The most common symptom of AS is pain and stiffness in the lower back, which may worsen in the morning or after periods of inactivity. Other symptoms include fatigue, loss of appetite, weight loss, depression, and difficulty sleeping.
The SI joint is particularly vulnerable to AS because it has limited movement compared to other joints. When inflammation occurs here, it can cause pain, stiffness, and decreased range of motion in the lower back. In severe cases, AS can lead to SI joint fusion, which causes a rigid spine with limited mobility.
Treatment for AS typically involves:
• Non-steroidal anti-inflammatory drugs (NSAIDs)
• Disease-modifying antirheumatic drugs (DMARDs)
• Biologic agents
• Corticosteroids
• Physical therapy
• Exercise programs
• Lifestyle changes
Suppose you experience chronic pain or stiffness in your lower back. In that case, it’s essential to get checked out by a doctor as soon as possible so they can diagnose any underlying conditions, such as ankylosing spondylitis, and provide appropriate treatments.
Diagnostic Criteria for Ankylosing Spondylitis
If you’ve been experiencing pain or stiffness in your lower back, it could be a sign of an autoimmune disease that specifically affects the sacroiliac (SI) joint. Ankylosing spondylitis is one such condition, and early diagnosis is critical for successful treatment outcomes. To help you understand this condition and its effects on the SI joint, let’s take a look at the diagnostic criteria:
• Patient must have at least 3 out of 4 of the following criteria:
o Morning stiffness lasting more than 1 hour
o Low back pain or buttock pain that has been present for at least three months
o Improvement in symptoms with exercise but not with rest
o Sacroiliac joint tenderness or pain on palpation
• Imaging Studies: X-rays may show changes in the vertebrae and sacroiliac joints, such as narrowing the joint space, bony fusion, and erosions. MRI scans can help identify spinal joint inflammation that may not be visible on an X-ray. CT scans can provide a detailed view of the vertebral bodies and intervertebral discs.
• Laboratory Tests: Blood tests can be used to measure levels of inflammatory markers such as C-reactive protein (CRP), Erythrocyte Sedimentation Rate (ESR), and rheumatoid factor (RF). These tests are usually elevated if ankylosing spondylitis is present. HLA B27 testing may also be conducted.
It’s important to note that while these criteria are used to diagnose ankylosing spondylitis, they do not guarantee a definitive diagnosis. Consult with your healthcare provider if you think you may have this condition so that they can provide further guidance on how to proceed.
Recognizing Early Signs of Ankylosing Spondylitis

Ankylosing spondylitis (AS) is an autoimmune disorder that affects the spine and other joints. Diagnosing can be difficult, but recognizing the early signs of AS is key to successful treatment outcomes.
The most common early signs of AS are recurring pain and stiffness in the lower back and sacroiliac joint, fatigue, morning stiffness lasting more than 30 minutes, redness or swelling in the affected area, decreased range of motion in the joint, difficulty sleeping due to pain, and tenderness when touched. If you are experiencing any of these symptoms, seeking medical attention as soon as possible is essential.
Diagnosis of AS typically involves a physical exam by a doctor, imaging tests such as X-rays or MRI scans, lab tests, and a medical history review. Your doctor may also ask about your AS or other autoimmune disorders and family history. Early detection is essential for successful treatment outcomes.
Living with ankylosing spondylitis can be challenging. But with proper diagnosis and treatment, those living with this condition can still lead active lives. If you are experiencing any of the above symptoms regularly, talk to your doctor immediately so that you can get started on treatment as soon as possible.
Arthritis Types that Can Cause Sacroiliitis

If you have been experiencing recurrent pain and stiffness in your lower back, fatigue, morning stiffness lasting more than 30 minutes, redness or swelling in the affected area, decreased range of motion in the joint, difficulty sleeping due to pain, or tenderness when touched then it is essential to seek medical advice. These could be signs of sacroiliitis – an inflammation of the sacroiliac joint which any number of arthritis types can cause.
Osteoarthritis is one type of Arthritis that can cause sacroiliitis. This degenerative joint disease affects the cartilage and bones in the joints and usually occurs in older adults but can also affect younger individuals. Symptoms include pain, stiffness, and swelling.
Rheumatoid Arthritis is another type that can cause sacroiliitis. This autoimmune disorder causes inflammation of smaller joints, such as those in the hands and feet but can also affect larger joints, like the sacroiliac joint. Symptoms include pain, stiffness, swelling, fatigue, and loss of range of motion.
Psoriatic Arthritis is a type associated with psoriasis, which affects both small and large joints, including the sacroiliac joint causing inflammation leading to pain and stiffness as well as other symptoms such as fatigue, eye inflammation (uveitis), nail changes, skin rash (psoriasis), and swollen fingers or toes (dactylitis).
Ankylosing Spondylitis is another type that affects the spine and sacroiliac joints, causing pain and stiffness, which can lead to fusion of the vertebrae, resulting in decreased range of motion. Other symptoms may include fatigue, fever, weight loss, eye inflammation (uveitis), enthesitis (inflammation at tendon attachments), and peripheral Arthritis (affecting other joints).
Infectious Arthritis is caused by bacteria or viruses entering a joint, causing severe inflammation and leading to severe pain and swelling. It is essential to seek medical attention if you are experiencing any symptoms mentioned above, as they could be signs of an underlying condition related to arthritis types that can cause sacroiliitis.
Other Possible Causes of SI Joint Pain
Trauma such as a fall or car accident can cause SI joint pain. Infection of the SI joint can also lead to pain and inflammation. Arthritis is another potential cause. Osteoarthritis, rheumatoid Arthritis, and psoriatic Arthritis can all affect the SI joints. Spondylolisthesis is when one vertebra slips out of place, resulting in SI joint pain and instability. Pelvic instability is another possible cause of SI joint pain, it occurs when muscles in the pelvic area become weak or imbalanced, leading to an unstable pelvis that causes discomfort in the lower back and buttocks region.
If you are experiencing persistent lower back or buttocks pain, you must visit a doctor for diagnosis and treatment options. With proper medical attention, you should be able to find relief from your symptoms and get on with your life!
Treatments for Sacroiliac Joint Pain and Dysfunction
If you are experiencing lower back and buttock pain, visiting a doctor for diagnosis and treatment options is essential. Treatments for sacroiliac joint pain and dysfunction vary depending on the severity of the condition and the individual’s preferences.
Physical therapy is often recommended to defend against sacroiliac joint pain and dysfunction. Exercises are prescribed for strengthening the muscles that support the SI joint, improving balance and posture, stretching tight muscles and tendons around the joint, and increasing flexibility of tissues surrounding the joint. Other modalities, such as ultrasound or electrical stimulation, may also reduce inflammation.
Medications can also reduce pain and inflammation associated with sacroiliac joint dysfunction. Pain relief medications such as non-steroidal anti-inflammatory drugs (NSAIDs) or muscle relaxants may be prescribed to relieve pain and reduce inflammation. In more severe cases, more potent medications such as opioids may be necessary. Corticosteroid injections can also be used to reduce inflammation around the joint.
Lifestyle modifications can help manage symptoms of sacroiliac joint dysfunction by avoiding activities that aggravate symptoms or using assistive devices when needed. practicing good posture when sitting or standing can help maintain proper spine alignment and reduce stress on the SI joints.
In some cases where other treatments have failed or if a structural abnormality needs to be corrected, surgery may be recommended. The type of surgery performed will depend on the patient’s condition but typically involves fusing two bones to stabilize them.
It is essential to discuss all your treatment options with your doctor to determine which one is best suited for your individual needs. Proper diagnosis, treatment plan, lifestyle modifications, and patience make it possible to find relief from sacroiliac joint pain and dysfunction.
Final thoughts
Do you suffer from lower back pain and stiffness? If so, it could indicate an autoimmune disease affecting the sacroiliac (SI) joint. Early diagnosis is critical for successful treatment outcomes, so it’s essential to understand what this condition is and how it can affect the SI joint.
Ankylosing spondylitis (AS) is an autoimmune disorder that affects the spine and other joints. Common early signs of AS include recurring pain and stiffness in the lower back and sacroiliac joint, fatigue, morning stiffness lasting more than 30 minutes, redness or swelling in the affected area, decreased range of motion in the joint, difficulty sleeping due to pain, and tenderness when touched. If you are experiencing any of these symptoms, seeking medical attention as soon as possible is essential.
If you are experiencing lower back and buttock pain, don’t wait – visit your doctor for diagnosis and treatment options as soon as possible. Early diagnosis brings better chances of successful treatment outcomes – so don’t delay!