All bite guides

How do I know if I have bed bug bites?

Bed bug bites often appear as small itchy welts in lines or clusters on skin exposed during sleep. They are uncomfortable but are not known to spread disease.

AI-generated reference of clustered bite marks on medium skin
AI-generated visual reference, not a real patient photo.

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What it looks like

  • Small red or dark bumps in a line or zigzag of three or more
  • Usually on arms, neck, face, or legs
  • New bites appear overnight

What to do

  • Wash bites with soap and water; avoid scratching
  • Check mattress seams for small dark spots and bugs
  • Wash bedding on hot and dry on high heat

See a doctor if you notice

  • Signs of infection: spreading warmth, pus, fever
  • Blistering or severe allergic reaction

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

Other bite guides

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