Mite infection does not cause only a single type of skin disease, but most of them will show itching, redness, rash, pustules, increased dander and rough skin, and there are still some differences in the specific performance. Mite infection resulting in skin may cause mite dermatitis, rosacea, worm mite disease, blepharitis, scabies, etc.: 1. Mite dermatitis: after being bitten patients feel itchy skin, heavier at night, local skin edema, erythema, wind masses, common bruises mite bite marks, occurring first on body contact sites or exposed parts, can also be generalized to the whole body, allergic reaction is more serious, the top of the lesions will appear blisters The bite marks can be caused by mites and can appear mainly on the middle of the face, mainly on the tip of the nose and the nose, often accompanied by enlarged pores and increased sebum secretion; abnormal proliferation of nasal tissue can lead to hypertrophy of the tip of the nose; 3. The manifestation is persistent erythema in the middle of the face, on the basis of which papules, pustules and desquamation gradually appear, which can be complicated by periorbitis and blepharitis in severe cases; 4, blepharitis: associated with peristomal mite infection, generally manifesting as burning sensation, itching, stinging, increased secretion, congestion and swelling of the eyelid margin, and even vesicles, local ulcers or scales; 5, scabies: is a contact infectious skin disease caused by scabies mites. The main manifestation is a papule, the tip of which may have small blisters with intense itching, and fine, raised, grayish or light black lines may also appear on the skin.