Most insect which draw a blood meal though a bite will cause a local reaction with redness, swelling, warmth and itch.
It is often impossible to tell these apart, but bedbugs will often leave a straight line or repeat bites whereas other bugs like mosquitos, may look scattered. Scabies
rashes are not bites but reactions to the scabies feces
and body parts and often look like a line or burrow.
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