Rosacea, if untreated, mainly affects the appearance. It was formerly called rhinophyma and typically occurs in the central part of the face, manifesting as persistent erythema and dilation of capillaries, constituting a chronic inflammatory skin disease.

The occurrence mechanism of rosacea is quite complex. It is related to consuming overly greasy, overly sweet, spicy, and irritating foods, and is also associated with frequently staying up late, anxiety, and insomnia, which can lead to the development of rosacea.

In treating rosacea, it is important to avoid excessive cleaning of the skin to prevent damage to the skin's barrier function. It is also important to enhance skin moisturization and physical sun protection, avoid excessive cold or heat exposure, and manage stress. Diet-wise, it is advisable to refrain from drinking alcohol and avoid spicy and irritating foods.