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Scabies is a contagious skin infestation by the mite Sarcoptes scabiei. The most common symptoms are severe itchiness and a pimple-like rash. Occasionally, tiny burrows may appear on the skin. In a first-ever infection, the infected person will usually develop symptoms within two to six weeks. During a second infection, symptoms may begin within 24 hours. These symptoms can be present across most of the body or just certain areas such as the wrists, between fingers, or along the waistline. The head may be affected, but this is typically only in young children. The itch is often worse at night. Scratching may cause skin breakdown and an additional bacterial infection in the skin.
Mites are small arachnids.
Sarcoptes scabiei or the itch mite is a parasitic mite that burrows into skin and causes scabies. The mite is found in all parts of the world. Humans are not the only mammals that can become infected. Other mammals, such as wild and domesticated dogs and cats as well as ungulates, wild boars, bovids, wombats, koalas, and great apes are affected.
Cutaneous larva migrans is a skin disease in humans, caused by the larvae of various nematode parasites of the hookworm family (Ancylostomatidae). These parasites live in the intestines of dogs, cats, and wild animals and should not be confused with other members of the hookworm family for which humans are definitive hosts, namely Ancylostoma duodenale and Necator americanus.
Aquagenic pruritus is a skin condition characterized by the development of severe, intense, prickling-like epidermal itching without observable skin lesions and evoked by contact with water.
Acariasis is an infestation with mites.
Cheyletiella is a genus of mites that live on the skin surface of dogs, cats, and rabbits.
Eosinophilic folliculitis is an itchy rash with an unknown cause that is most common among individuals with HIV, though it can occur in HIV-negative individuals where it is known by the eponym Ofuji disease. EF consists of itchy red bumps (papules) centered on hair follicles and typically found on the upper body, sparing the abdomen and legs. The name eosinophilic folliculitis refers to the predominant immune cells associated with the disease (eosinophils) and the involvement of the hair follicles.
The flour mite, Acarus siro, a pest of stored grains and animal feedstuffs, is one of many species of grain and flour mites. An older name for the species is Tyroglyphus farinae.
The Trombiculidae are a family of mites. The best known of the Trombiculidae are chiggers. The two widely recognized definitions of "chigger" are the scientific and the common, the latter of which can be found in English and medical dictionaries. According to most dictionaries, the several species of Trombiculidae that bite their host in their larval stage and cause "intense irritation" or "a wheal, usually with severe itching and dermatitis", are called chiggers. The scientific definition seemingly includes many more, but not all species of Trombiculidae.
Larva currens is an itchy, cutaneous condition caused by infections with Strongyloides stercoralis. It is caused by the intradermal migration of strongyloides and distinguished from cutaneous larva migrans by its rapid migration, perianal involvement and wide band of urticaria.
Grocer's itch is a cutaneous condition characterized by a pruritic dermatitis that occurs from coming into contact with mites such as Carpoglyphus passularum or Glyciphagus domesticus. Contact usually occurs when handling food with mites in it, such as figs, dates, prunes, grain, cheese, or other dried foods.
Coolie itch is a cutaneous condition caused by Rhizoglyphus parasiticus, characterized by an intense pruritus. It is found in India on tea plantations and causes sore feet.
Wheat warehouse itch is a cutaneous condition caused by a mite, Cheyletus malaccensis.
Senile pruritus is an itch in the elderly of unknown cause.
Baker's itch is a cutaneous reaction caused by bites of Acarus siro, the flour mite.
Carpoglyphus is a mite genus in the family Carpoglyphidae. The species Carpoglyphus passularum is responsible for a cutaneous condition called grocer's itch.
Dust mite allergy, also known as house dust allergy, is a sensitization and allergic reaction to the droppings of house dust mites. The allergy is common and can trigger allergic reactions such as asthma, eczema or itching. It is the manifestation of a parasitosis. The mite's gut contains potent digestive enzymes that persist in their feces and are major inducers of allergic reactions such as wheezing. The mite's exoskeleton can also contribute to allergic reactions. Unlike scabies mites or skin follicle mites, house dust mites do not burrow under the skin and are not parasitic.
References
- ↑ James, William D.; Berger, Timothy G.; et al. (2006). Andrews' Diseases of the Skin: clinical Dermatology. Saunders Elsevier. ISBN 0-7216-2921-0.
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