All bite guides

What does a deer tick bite look like?

Blacklegged ticks are small, with a dark shield and an orange-red body in adult females. They spread Lyme disease in the Northeast, Mid-Atlantic, and upper Midwest.

AI-generated field guide image of a blacklegged tick
AI-generated visual reference, not a real patient photo.

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What it looks like

  • A small red bump at the bite, similar to a mosquito bite, is normal
  • Nymphs are the size of a poppy seed and easy to miss
  • The tick may still be attached

What to do

  • Remove with fine tweezers close to the skin, pulling straight up
  • Clean the area with soap or alcohol
  • Do not use heat, nail polish, or petroleum jelly
  • Watch the site for 30 days

See a doctor if you notice

  • A rash that keeps growing
  • Fever or flu-like illness within a month

Trouble breathing, face or throat swelling: call 911 now.

Other bite guides

Educational information only, not a diagnosis. BiteID is in alpha testing.