Rhinitis and sinusitis are common inflammations in our nasal area, frequently occurring and widely prevalent. Rhinitis primarily involves inflammation of the nasal mucosa, while sinusitis specifically refers to inflammation in the sinus cavities and their mucous membranes. These two have different locations of onset. Furthermore, rhinitis is more commonly seen clinically compared to sinusitis, which is less common relative to rhinitis. Moreover, rhinitis is generally treated with medication and seldom requires surgical intervention. In contrast, sinusitis may also require surgical treatment besides medication. Thus, the main differences between them primarily include these aspects. Overall, the fundamental difference between rhinitis and sinusitis lies in their different locations of onset.