A 21-year-old female asked:
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if a flea bites a human, does it usually itch or does the skin just get red?

2 doctor answers
Dr. James Ferguson
45 years experience Pediatrics
Varies: The response to any insect bite varies with the individual. A typical response includes release of local chemicals to the saliva of the insect. These dilate local capillaries & create the bite mound which functions to block direct access of that saliva to the blood stream. These chemicals may trigger itching or redness.
Answered on Jul 28, 2019
Dr. David Rosenfeld
26 years experience Pain Management
Variable: There may be redness, itching or both.
Answered on Jul 22, 2019

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Could be: Mrsa infection which people commonly mistake for spider/bug bites. See your doctor.
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Dermatogrpahia: Dermatographia/urticaria. Try oral antihistamine like cetirizine or fexofenadine.
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? Cold Urticaria ?: Recommend that you get this evaluated by your physician or an allergist.
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Moisture: This can be a sign of a loss of moisture in the skin. A good moisturizing lotion may help. Try not to scratch as it can make it worse by itching mor ... Read More
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