DefinitionFleas are blood-sucking insects that feed on humans, dog, cats, and other animals. Fleas do not have wings.Alternative NamesDog fleas; SiphonapteraCauses, incidence, and risk factorsFleas prefer to live on dogs and cats, but may also be found on humans and other available animals. Pet owners may not be bothered by fleas until their pet is gone for a lengthy period of time, and the fleas must find another place to go. This is when they begin to bite humans. Bites frequently occur around the waist, ankles, armpits, and in the bend of the elbows and knees.SymptomsHivesItching can be all over or just where the rash isItching can be severeRash with small bumps that itch and may bleed Located on the armpit or fold of a joint (at the elbow, knee, or ankle)The amount of skin affected inc