In medicine, pustules refer to pustules, and rosacea is rosacea. Recurrent pustules of rosacea may be related to neurovascular dysfunction, damage to the skin barrier function, as well as temperature changes, improper skin care, and improper treatment programs. 1. Neurovascular dysfunction: If the local area is stimulated by inflammation for a long time, or if the hormone level in the body changes abnormally, it may lead to neurovascular dysfunction, which may cause recurrent pustules of rosacea. 2. Impairment of skin barrier function: If the sebum content of the patient decreases and the water content of the stratum corneum decreases during the period of illness, the skin barrier function may be impaired, making it difficult to resist the invasion of pathogenic bacteria, leading to recurring pustules of rosacea. 3. Temperature changes: If the temperature suddenly rises or the body is in a situation of alternating hot and cold, such as taking a hot bath after strenuous exercise, eating chili peppers and ice-cream at the same time, etc., it may cause recurrent pustules of rosacea. 4. Inadequate skin care: Over-cleansing of the skin and frequent use of inappropriate cosmetics may damage the skin barrier, which in turn may trigger recurrent pustules of rosacea. 5. Inappropriate treatment: The treatment of rosacea is related to the manifestation of the lesions, and an inappropriate treatment plan may also lead to recurrent pustules of rosacea. There are many causes of recurrent pustules, so it is recommended that patients seek medical attention to determine the cause.