Mite infections can cause increased dandruff, itching, facial oiliness, enlarged pores, acne, rosacea and other symptoms. 1. Increased dandruff, itching: mite excreta can stimulate the sensory nerves, causing itching; when the mite draws nutrients from the skin, it can accelerate the aging and damage of the skin cells, which can lead to dandruff, skin damage, and deterioration of the skin, and a dull yellowish complexion. 2. Facial oiliness, enlarged pores: mite parasites will lead to hair follicles, blood vessel dilation, promote sebum secretion increase, make facial oiliness, enlarged pores. 3. Acne, rosacea: mites accumulate in the hair follicles in large quantities, causing damage to the skin tissue, sebaceous glands discharge is not smooth, but also induced acne or rosacea, so that the skin appears erythema, pimples, nodules and other manifestations. It is recommended to pay attention to hygiene and cleanliness in daily life, go to the hospital in time when mite infection occurs, and follow the doctor’s instructions for reasonable treatment.