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Alternative namesHarvest mite; Red mite
DefinitionChiggers are the larvae of a type of mite found in tall grass and weeds. Chigger bites cause severe itching.
Causes, incidence, and risk factors
The mites are found in the southern part of the U.S. and in other countries. They are usually restricted to certain habitats such as berry patches, tall grass and weeds, and woodland edges. The larvae attack humans around the waist, the ankles, or in warm skin folds.
The itching usually occurs several hours after the larvae attach to the skin. The larvae can sometimes be seen in the center of a red, pimple-like bump that has not been scratched.
Signs and testsA doctor can diagnose chiggers by examining the rash.
TreatmentThe objective of treatment is to relieve the itching. Antihistamines and corticosteroid creams or lotions may be helpful.
Expectations (prognosis)This condition heals itself without treatment.
Secondary infection may follow intense scratching as a complication.
Calling your health care providerApply home treatment and call your health care provider if there are signs of complications.
Call for an appointment with your health care provider if rash is itching intensely, or if symptoms worsen or do not improve with treatment.
PreventionAvoid outdoor areas contaminated with chiggers, if known.
Update Date: 4/22/2003Elizabeth Hait, M.D., Department of Pediatrics, Rainbow Babies and Children's Hospital, Case Western Reserve University, Cleveland, OH. Review provided by VeriMed Healthcare Network.
Last updated: Tue, 06 Jan 2009 00:20:03 GMT