(See also Introduction to Bites and Stings and Tick Bites.)
Mite infestations are common and are responsible for the intensely itchy rash caused by the bites of chiggers (mite larvae), for scabies, other itchy rashes, and a number of other disorders. The effects on the tissues around the bite vary in severity. In some Asian countries and Australia, chiggers may transmit scrub typhus.
Mites that bite come from a variety of sources, including
Some mites, such as those that cause scabies, bite and burrow under the skin. Demodex mites cause a similar rash (sometimes called mange).
Some mites do not bite, but they cause allergic reactions such as
-
Grocer's itch (allergic contact dermatitis), which affects people who handle stored grain products, cheese, and other foods
-
Wheezing as a reaction to the waste products of dust mites commonly found in pillows, mattresses, and carpets
Treatment
Corticosteroid creams or antihistamines taken by mouth are used to control itching. Antibiotics taken by mouth are given if mites have burrowed under the skin. Scabies is treated by applying a cream containing permethrin or a solution of lindane. A cream containing a corticosteroid is sometimes used for a few days to reduce itching. If permethrin or lindane is used, it is given before the corticosteroid.
