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Spider bites. 1  Brown recluse spider bites cause a painful bite that later may develop into a bruise or blister. 2  Black widow spider bites typically are not painful but within several hours patients develop a systemic reaction presenting as muscle pain, stomach pain, and breathing difficulties. small blister or pus filled bump usually occurs a few days later. In rare cases, some patients can develop anaphylaxis to fire ant bites. Lice bites usually present as small, red bumps on the shoulders, neck, and scalp. They are very itchy and are a sign that there are probably numerous nits and lice in the scalp.
Peculiarities of Bites of Bed Bugs. Mouthparts of a bed bug resemble a tube with two grooves: one is narrow and the second is a bit wider. Wide channel serves for blood sucking, while the narrow one serves for saliva injection during the bite. Saliva of a bed bug contains analgesics, so when an insect bites, it does not hurt or itches. Where do bed bugs bite? Bedbugs prefer to bite people with thin skin. That is why very often women and children become their victims. Bed bugs like places with more delicate skin: inner surface of arms and legs. You can notice bed bug bites on face and your neck. Bed bugs rarely bite pets, as animals have thicker skin than humans.