Identifying common spider bites. Spider bites are usually harmless, and spiders don't usually bite unless threatened. The rash caused by a spider bite will likely take on a different color from your surrounding skin.

A bite from a black widow is often. Webjul 30, 2021 · overview. Websep 23, 2022 · noticeable skin discoloration. Webjul 21, 2023 · part 1.