Chiggers are tiny, six-legged wingless organisms (larvae) that grow up to become a type of mite. Chiggers are found in tall grass and weeds. Their bite causes severe itching.

Causes

Chiggers are found in certain areas, such as berry patches, tall grass and weeds, and woodland edges.

Chiggers bite humans around the waist, ankles, or in warm skin folds. Bites commonly occur in the summer and fall months.

Symptoms

The main symptoms are:

• Severe itching
• Red pimple-like bumps or hives

Itching usually occurs several hours after the chiggers attach to the skin.

A skin rash may appear on the parts of the body that were exposed to the sun. It may stop where the underwear meets the legs. This is is often a clue that the rash is due to chigger bites.

Exams and Tests

A doctor can diagnose chiggers by examining the rash.

Treatment

The objective of treatment is to relieve the itching. Antihistamines and corticosteroid creams or lotions may be helpful.

Outlook (Prognosis)

This condition heals itself without treatment.

Possible Complications

Secondary infection may follow intense scratching as a complication.

When to Contact a Medical Professional

Call for an appointment with your health care provider if the rash itches very badly, or if symptoms get worse or do not improve with treatment.

Prevention

Avoid outdoor areas contaminated with chiggers, if known.

Alternative Names

Harvest mite; Red mite