Several species of Trombiculidae in their larva stage bite their animal or human host and by embedding their mouthparts into the skin cause "intense irritation" [4] or "a whealusually with severe itching vad är jiggers dermatitis ". Trombiculidae live in forests and grasslands and are also found in the vegetation of low, damp areas such as woodlands, berry bushes, orchards, along lakes and streams, and even in drier places where vegetation is low, such as lawns, golf courses, and parks. In their larval stage, they attach to various animals, including humans, and feed on skin, often causing itching. The best known species of chigger in North America [11] is the hard-biting Trombicula alfreddugesi of the Southeastern United Stateshumid Midwest [12] and Mexico. Trombiculid mites Googletrender through a lifecycle of egg, larva, nymphand adult.
Peutz—Jeghers syndrome often abbreviated PJS is an autosomal dominant genetic disorder characterized by the development of benign hamartomatous polyps in the gastrointestinal tract and hyperpigmented macules on the lips and oral mucosa melanosis. The risks associated with this syndrome include a substantial risk of cancerespecially of the breast and gastrointestinal tracts. Patients with the syndrome also have an increased risk of developing carcinomas of the liver, lungs, breast, ovaries, uterus, testes, and other organs. Specifically, it is associated with an increased risk of sex-cord stromal tumor with annular tubules in the ovaries. Due to the vad är jiggers risk of malignancies, direct surveillance is recommended.