Many: 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, fleas, etc. May look scattered. However, there are treated in the same way - wound care, steroid creams and antihistamines.
Answered 2/24/2019
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