Rosacea, also known as rosacea, occurs in middle-aged adults between the ages of 30 and 50 and can be clinically divided into three stages: the erythematous phase, the papular phase, and the hypertrophic phase. 1. Erythematous phase: Symmetrical erythema can appear in the middle of the face, nose, cheeks, and between the eyebrows, and the erythematous plaques become fully flushed and congested with a burning sensation after the application of spicy, stimulating foods. 2. 3. Hypertrophic phase: This condition can be seen in a small number of patients, usually in males, and is caused by repeated infections resulting in hypertrophy of the nasal end and dark red color.