<unk>  occur when an<unk>  is agitated and seeks to defend itself through its natural defense mechanisms, or when an<unk>  seeks to feed off the bitten person. Some<unk> s<unk>  formic acid, which can cause an immediate skin reaction often resulting in redness and swelling in the injured area.<unk>  from fire ants, bees, wasps and hornets are usually painful, and may stimulate a dangerous allergic reaction called anaphylaxis for at-risk patients, and some wasps can also have a powerful bite along with a<unk>  Bites from mosquitoes and fleas are more likely to cause itching than pain. The skin reaction to<unk>  usually lasts for up to a few days. However, in some cases, the local reaction can last for up to two years. These bites are sometimes misdiagnosed as other types of benign or cancerous lesions.
Insect bites and stings
Shingles
Arthropod bites and stings
Animal bite
Spider bite
Cat bite
Cigarette burns
Dog bite