M94.1

Clinical Causes: Autoimmune response: The immune system mistakenly targets cartilage, leading to inflammation. Genetic predisposition: Some individuals may have a genetic susceptibility, but specific genes are not well defined. Environmental triggers: Possible links exist with infections or environmental factors that may initiate immune dysregulation. Associated conditions: Sometimes, relapsing polychondritis appears alongside other autoimmune diseases such as rheumatoid arthritis or vasculitis.

Key Symptoms: Swelling and pain in the ears, especially the cartilaginous parts such as the outer ear Nasal cartilage inflammation causing a saddle-nose deformity Respiratory issues due to inflammation of the larynx, trachea, or bronchi, leading to breathing difficulties Joint pain and arthritis affecting multiple joints Ocular inflammation, including conjunctivitis, uveitis, or scleritis Skin lesions or rashes in some cases Fatigue and general feelings of malaise Fever during active episodes of inflammation

Diagnosis Path: Physical examination to observe swelling, redness, and deformities in cartilage-rich areas Laboratory tests, including blood work to detect inflammation markers such as ESR and CRP Imaging studies like X-rays, MRI, or CT scans to assess cartilage and tissue damage Biopsy of affected tissue in select cases to confirm inflammation and rule out other conditions

Treatment Protocols: Corticosteroids to reduce inflammation during flare-ups Immunosuppressive medications such as methotrexate, azathioprine, or cyclophosphamide to modulate immune response NSAIDs for pain relief and symptom management Biologic agents in some cases to target specific components of the immune system Supportive therapies including physical therapy and corticosteroid tapering Regular monitoring by healthcare providers to adjust treatments and manage complications