Insect bites and stings occur when an
insect is agitated and seeks to defend itself through its natural defense mechanisms, or when an insect seeks to feed off the bitten person. Insects inject
formic acid, which can cause an immediate skin reaction often resulting in redness and swelling in the injured area. The sting from
fire ants,
bees,
wasps and
hornets are usually
painful, and may stimulate dangerous
allergic reaction called
anaphylaxis for at-risk patients. Wasps can bite and sting at the same time. Bites from
mosquitoes,
fleas and
mites are more likely to cause
itching than pain.
See also
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