The symptoms of flea bites and bed bug bites are similar. Bites of both these insects would produce swelling on the skin with tiny red spot on the affected site. It can also cause hives and blisters in severe cases.
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First of all, flea bites have the small red dot in the center and may be more clustered. In most cases, you will get them on your ankles but other body parts are not excluded. Bed bug bites are inflamed red bumps which can appear lined up in a row.
Similar to a bed bug bite, a mosquito bite is not only annoying and irritating, but it also causes various allergic reactions. Despite there are mosquito preventions , mosquito bites can transmit serious diseases such as malaria, dengue fever, yellow fever, brain infection, and meningitis.
Unlike bed bug bites, flea bites are known to spread disease in situations where the host is hypersensitive to flea bites and that may lead one a trip to the ER. So this is something to be wary about.
The pattern of the Bed Bug bites is usually in a straight row as if the bud bug bites one place moves a step forward and bites again on a different spot. A wheal caused by a flea is most likely to swell more in a short span of time and it's small in size. It is usually very itchy and persists for a period of time.