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  4. what are the causes of chigger mite dermatitis and chigger mite dermatitis

what are the causes of chigger mite dermatitis and chigger mite dermatitis

what are the causes of chigger mite dermatitis and chigger mite dermatitis

Etiology of chigger mite dermatitis

First, the cause of the disease

Adults and juveniles of chigger mites do not suck blood, feed on eggs and plant juice of other animals, and prefer to live in damp and grassy shade bushes. Only the larvae suck blood, the larvae parasitize mammals and birds, reptiles, amphibians, and sometimes invade people.

Second, the pathogenesis

When the host stays in the breeding ground, the larvae are attracted to the host by the smell of the host. First, the larvae pierce the skin with claw and then inject saliva to absorb the tissue fluid, lymph and blood of the host. When sucking blood, they generally do not change the position and the host, and can stay in the host for 40 ~ 72 hours, or as long as 10 days.

Chigger mites have a small range of activities, which are affected by temperature, humidity, light, airflow and other factors. Larvae are sensitive to the respiration, smell, body temperature and color of the host.

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