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Answer:    It could be pretty much any bug. Bruises are caused by bleeding under the skin, which can happen with any type of bite. Typically ant bites do not bruise; mosquito bites sometimes do; and with a spider bit it would depend on the type of spider.
A description of the bite would be helpful. Is it a raised, red, itchy bump? Mosquito. Is it a raised red bump with a white pustule? Ant. Are there visible puncture marks? Spider.

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Question for chronic dull pain sufferers...?

I pulled my collar the other daylight playing baseball and it still hurts alot when i move it?

Hot, Dizzy, light-headed , and nauseated, what is this?

I be stung by a Wasp on both wrists two days ago and my skin is swelling up and it itches horribly. What can?

When do i use an rime pack to drop off swelling?

Broken tibia/fibia

Is a 325mg pill of oxycodone (Perkaset) dangerous or an excessive dose?

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