Trombidiosis (Infestation With Chiggers)

Arthropods in dermatology

“…12,19,[23][24][25][26][27][28][29] Other arthropods capable of producing papular urticaria include mosquitoes and various species of mites. [30][31][32][33][34][35][36][37][38] Histology…”

“…Chiggers are the larval form of mites in the Trombiculidae family, with the most common species being Eutrombicula alfreddugèsi. 38,107 Contact with the mite usually occurs during summer and fall, when outdoor activities are maximal. The gravid female mite lays eggs in the soil, and the red chigger larvae emerge and crawl in search of a suitable host.…”

“…107 In some parts of the world, species of Trombicula carry the bacterium Rickettsia tsutsugamushi, the causative agent of scrub typhus. 38,47 Persons working in areas commonly inhabited by rats and mice (groceries, granaries, restaurants, storehouses) may be affected by murine mites. 117,118 Like the reactions caused by most mites, those produced by murine mites are pruritic, urticarial papules that may be confused with flea bites or scabies.…”

Mites and Ticks (Order: Acari)

“…9 Small (1 -2 mm) macules usually appear near belt lines, ankles, or moist intertriginous areas where the larva pierces the skin with its stylostome and releases proteolytic enzymes to liquefy epidermal cells. The larval stages produce crusted lesions similar to chicken pox.…”