M46.86

Clinical Causes: Autoimmune responses where the immune system mistakenly attacks spinal tissues Genetic predispositions influencing immune regulation Infections that trigger inflammatory responses in the spine Underlying systemic diseases, such as ankylosing spondylitis, that involve the spine Environmental factors including infections or trauma that can initiate inflammation

Key Symptoms: Persistent lower back pain, often worse with rest and improved with activity Stiffness in the lumbar spine, especially in the morning or after periods of inactivity Limited range of motion in the lower back Tenderness when pressing along the lower vertebrae Possible swelling or warmth in the affected area Fatigue and malaise, especially if associated with systemic inflammatory conditions In some cases, radiating pain into hips or thighs

Diagnosis Path: • Medical history review focusing on symptom duration, severity, and pattern • Physical examination assessing spinal flexibility and tenderness • Blood tests to detect markers of inflammation, such as elevated ESR or CRP levels • Imaging studies like X-rays or MRI scans to visualize inflammation, joint damage, or structural changes in the lumbar vertebrae • Exclusion of other spinal conditions such as degenerative disc disease or infections

Treatment Protocols: • Nonsteroidal anti-inflammatory drugs (NSAIDs) to control inflammation and pain • Physical therapy to improve strength, flexibility, and posture • Regular exercise to promote spinal health • Disease-modifying anti-rheumatic drugs (DMARDs) or biologic agents in certain cases to control underlying immune responses • Corticosteroid injections for localized inflammation • Lifestyle modifications, including ergonomic adjustments and weight management • Monitoring for potential complications or progression of the disease