[Jeff-Groves]

That's an extreme brown recluse /black widow reaction.
Not all bites are that bad. Depends on your body reaction to the spider venom.
I've been bitten by both the Brown Recluse and Black Widow and never suffered that bad.
It's mostly Internet panic pushing that kind of scare tactic.
Kind of disappointed you posted that kind of stuff without better research to be honest.
I hate both spiders and snakes but I would not over play the dangers of them.
Shock photos only induce unneeded fears without a total background on the subject.