If you’ve ever spent time outdoors in Texas only to end up with intensely itchy red bites, chances are you’ve encountered chiggers. These tiny pests are most active from late spring through early fall, and while they’re nearly impossible to see, their bites can leave you scratching for days.
Unlike mosquitoes or ticks, chiggers don’t bite to drink blood. They are the larval stage of mites in the Trombiculidae family and commonly feed on small animals, birds and reptiles. Humans become accidental hosts when walking through areas where chiggers are waiting on vegetation.
What Are Chiggers?
Chiggers are microscopic, six-legged larvae that attach themselves to passing hosts as they brush against grass, weeds or other vegetation. Once on the body, they tend to migrate to warm, tight or moist areas such as:
- Waistbands
- Sock lines
- Behind the knees
- Armpits
Rather than burrowing into the skin, chiggers attach to the surface and inject saliva that breaks down skin cells. They then feed on the dissolved tissue and lymph before dropping off. The saliva left behind triggers an allergic reaction that causes the familiar itching and irritation.
Symptoms of Chigger Bites
Most people won’t notice the bite immediately. The itching often begins several hours after the chigger has already detached.
Symptoms may include:
- Intense itching
- Redness
- Swelling
- Small, raised itchy bumps
For some people, the irritation lasts only a few days, while others may continue itching for up to two weeks.
Despite common myths, covering bites with nail polish, bleach or other home remedies will not help because the chigger is already gone.
Where Chiggers Are Found
Chiggers thrive in warm, humid conditions and are commonly found in:
- Overgrown fields
- Tall grass
- Brushy areas
- Trail edges
- Areas where short grass meets taller vegetation
- Moist locations near ponds, creeks and rivers
Even the edge of an otherwise well-maintained yard can provide suitable habitat if vegetation is allowed to grow tall.
How to Prevent Chigger Bites
The best way to deal with chiggers is to avoid being bitten in the first place.
Before heading outdoors:
- Wear long pants.
- Tuck pant legs into your socks.
- Apply an insect repellent containing DEET.
- Treat clothing with permethrin, following label directions. Permethrin should only be applied to clothing, never directly to skin.
After spending time outdoors:
- Remove clothing as soon as possible.
- Shower promptly.
- Scrub your skin with soap, water and a washcloth to remove any chiggers that haven’t attached yet.
What to Do If You Get Bitten
If you believe you’ve been exposed to chiggers, showering quickly may reduce the number of bites.
Once itching begins, treatment focuses on relieving symptoms and preventing infection.
Helpful measures include:
- Applying an antiseptic ointment to reduce the risk of infection.
- Using over-the-counter antihistamine products to help control itching.
- Avoiding excessive scratching, which can lead to secondary skin infections.
People who experience severe reactions or are especially sensitive to insect bites should contact their healthcare provider for additional treatment options.
With a few simple precautions, you can still enjoy hiking, fishing, gardening and other outdoor activities while reducing your chances of bringing home an unwelcome souvenir from the tall grass.
