What do bedbug bites resemble on a person?

What do bedbug bites resemble on a person? - briefly

Bedbug bites manifest as «small, raised, red welts» that itch intensely and typically appear in linear or clustered patterns resembling mosquito or flea bites.

What do bedbug bites resemble on a person? - in detail

Bedbug bites typically appear as small, raised welts that range from red to pink. The lesions are often clustered in a linear or zig‑zag pattern, reflecting the insect’s feeding behavior as it moves across the skin. Individual spots measure about 2–5 mm in diameter and may develop a central punctum where the mouthparts entered.

Key visual characteristics include:

  • Shape: Oval or circular papules with a slightly raised border.
  • Color: Red, pink, or purplish hue that may darken after several hours.
  • Size: 2–5 mm, sometimes larger if the reaction is pronounced.
  • Distribution: Groups of three or more lesions aligned in a line, often on exposed areas such as the arms, neck, face, or legs.
  • Itching: Moderate to intense pruritus that intensifies after 24–48 hours.

The appearance can be confused with bites from other hematophagous insects. Similarities exist with:

  • Mosquito bites, which also produce itchy, red papules but generally occur singly rather than in a line.
  • Flea bites, which are small, round, and may appear in clusters, yet often affect the lower legs and ankles.
  • Mite bites (e.g., spider mites), which can cause a rash resembling bedbug lesions but lack the characteristic linear arrangement.

Differentiating factors are the linear or “breakfast‑cereal” pattern and the tendency for lesions to emerge in groups of three to five spots. In cases of severe allergic response, the welts may swell, develop a central blister, or become hyperpigmented after healing.