蠕形螨是寄生在人及其它哺乳动物的毛囊和皮脂腺内的一类永久性寄生螨类。多见于颜面部如鼻、前额、额部等皮脂腺发达的部位，引起蠕形螨病。寄生人体的主要有毛囊蠕形螨和皮脂蠕形螨，以前者为多见。健康人群可能是通过与患者密切接触或共用毛巾等方式获得感染。近年来的研究 Demodex mites are a type of permanent parasitic mites that are parasitic in the hair follicles and sebaceous glands of humans and other mammals. More common in the face, such as the nose, forehead, forehead and other parts of the developed sebaceous glands, causing detroric disease. The main parasitic human hair follicles Demodex and senescent Demodex, the former is more common. Healthy people may be infected through close contact with the patient or shared towels. Recent studies