Чем отличается укус блохи от клопа? - briefly
Flea bites are tiny, red papules with a central puncture that itch intensely within minutes, typically occurring in clusters on the lower legs. Bed‑bug bites are larger, raised welts with a surrounding halo, develop more slowly, and often appear in a linear pattern on exposed areas such as the arms or neck.
Чем отличается укус блохи от клопа? - in detail
Flea bites and bed‑bug bites are often confused because both cause small, itchy skin lesions, yet they differ markedly in appearance, timing, distribution, and associated symptoms.
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Morphology of the lesion
Flea: punctate, red papules with a central punctum; often surrounded by a halo of erythema.
Bed‑bug: raised, red welts that may develop a dark center; frequently form a linear or clustered pattern. -
Onset after the bite
Flea: itching begins within minutes to an hour.
Bed‑bug: delayed pruritus, typically appearing 12–48 hours later. -
Typical body sites
Flea: ankles, lower legs, and areas where clothing is tight; bites often appear on exposed skin.
Bed‑bug: face, neck, arms, and hands; lesions commonly occur on uncovered skin during sleep. -
Bite pattern
Flea: isolated punctures, occasionally multiple bites in close proximity but not in a straight line.
Bed‑bug: “breakfast‑lunch‑dinner” arrangement—three or more bites aligned in a row. -
Associated signs
Flea: occasional swelling, secondary bacterial infection if scratched.
Bed‑bug: possible vesicle formation, occasional systemic reactions such as fever or malaise in sensitised individuals. -
Vector potential
Flea: can transmit Yersinia pestis, murine typhus, and Bartonella henselae.
Bed‑bug: no proven disease transmission, though allergic reactions are documented.
Recognition of these distinguishing features enables accurate identification, appropriate treatment, and targeted pest‑control measures.