Although rare, the venom in wolf spider bites can cause allergic reactions in some people. Spider bite allergic reactions may ...

However, depending on the spider and its victim, bites can cause anything from mild itching and redness to an allergic reaction that becomes a medical emergency and could possibly result in death ...

Other times, like with a wasp sting or spider bite, when the venom releases into the skin and surrounding tissue, it causes pain and inflammation. These reactions can sometimes lead to bruising.

reactions to insect bites fall into three ... "Usually, when we see people who think they have a spider bite, it's an unrelated skin infection," adds Rick Spurlock, an emergency room physician ...