What is the typical age of onset for Wegener's granulomatosis?

Wegener's granulomatosis, now more commonly referred to as granulomatosis with polyangiitis, typically has an onset around the age of 40 years. This disease is characterized by a triad of findings, which include granulomatous inflammation, vasculitis affecting small to medium-sized vessels, and renal involvement, often leading to glomerulonephritis.

While it can occur in younger adults and occasionally in older individuals, its peak incidence is most commonly observed in those in their 40s and 50s, making around 40 years the typical age of onset. Understanding this demographic is crucial for healthcare providers to appreciate and recognize the symptoms early, as prompt diagnosis and treatment can significantly improve outcomes for individuals affected by this condition.