How Do Fleas Affect Humans?

Fleas are small, brown parasites that live on animals and can bite humans. Their bites are usually itchy and can trigger allergic reactions. Fleas can live for up to 100 days without a host. Fleas are more active at night, which makes them more likely to bite a human.

Flea bites are generally not painful, but they may cause pain in the joints, muscles, and chest. The skin surrounding the bite may also swell and become red. In extreme cases, flea bites may also lead to an infection or other problem. Fleas can carry bacteria and can infect humans and animals.

Adult fleas are small, wingless insects. They measure about a quarter to half an inch in length. Their body is dark brown or black, and their hind legs are modified for jumping. They can jump up to 8 inches vertically and 16 inches horizontally. Flea bites are typically red or reddish in color, and may occur in clusters or rows. Flea bites tend to be itchy and may be painful for several weeks.

Flea bites typically occur on the legs and ankles. They rarely bleed, but may bleed if scratched. The bite area contains a single puncture point, unlike those of mosquitoes, bees, and spiders, which leave two puncture points. However, bedbugs will leave a large swelling.

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