Why do I have itchy red bumps after hiking?
Chiggers are tiny mite larvae in grass and brush. Their bites cause intensely itchy red bumps, often where clothing is tight: waistbands, sock lines, and behind the knees.

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Check my biteWhat it looks like
- Clusters of red bumps or blisters
- Itching that peaks one to two days later
What to do
- Shower with soap soon after being outdoors
- Wash clothes in hot water
- Use anti-itch cream
See a doctor if you notice
- Signs of infection
- Itching that disrupts sleep for days
Trouble breathing, face or throat swelling: call 911 now.
Other bite guides
Educational information only, not a diagnosis. BiteID is in alpha testing.