15 Nose and Nasal Skin Changes Associated With Rosacea and Autoimmune Conditions

10. Vasculitic Nasal Changes and Systemic Involvement

Systemic vasculitis can produce dramatic and potentially devastating nasal changes that serve as important diagnostic markers and indicators of disease activity, particularly in conditions such as granulomatosis with polyangiitis, eosinophilic granulomatosis with polyangiitis, and microscopic polyangiitis. These conditions involve inflammation of blood vessels that can affect the nasal mucosa, cartilage, and surrounding tissues, leading to a spectrum of manifestations ranging from chronic rhinosinusitis to complete nasal destruction. Granulomatosis with polyangiitis, formerly known as Wegener's granulomatosis, classically presents with upper respiratory tract involvement including chronic nasal congestion, bloody nasal discharge, crusting, and progressive destruction of nasal cartilage that can result in saddle nose deformity. The inflammatory process in vasculitic conditions involves necrotizing inflammation of small to medium-sized vessels, often accompanied by granulomatous inflammation that can destroy normal tissue architecture and lead to irreversible structural damage. Early nasal manifestations may include persistent rhinosinusitis, nasal crusting, epistaxis, and anosmia, which can precede systemic manifestations by months to years, emphasizing the importance of recognizing these early signs. The diagnosis of vasculitic nasal involvement requires a high index of suspicion, often supported by tissue biopsy demonstrating characteristic histopathologic features, serologic testing for antineutrophil cytoplasmic antibodies (ANCA), and comprehensive evaluation for systemic involvement. Prompt recognition and treatment with appropriate immunosuppressive therapy are essential to prevent irreversible nasal destruction and associated functional impairment.