Chiggers 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 papule that has not been scratched.
Signs and tests
Examination of the rash is usually sufficient to diagnose chiggers.
Treatment
The objective of treatment is to relieve the itching . Antihistamines and corticosteroid creams or lotions (see corticosteroids - topical - low potency) may be helpful.
Expectations (prognosis)
This condition heals itself without treatment.
Complications
Secondary infection may follow intense scratching as a complication.
Calling your health care provider
Apply 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.
Prevention
Avoid contaminated areas, if known.