I was bitten by one recently 3 times but my reaction to the venom was not nearly as bad as those pictured above, but the worst I ever been bitten by anything.
Funny thing is, i thought I brought whatever bit me from the woods either 4wheeling or bringing it back in habitat material like bark ect. for my terrariums. All I knew was something bit me in the night but had no ideal what. Few days later I found a crazy venomous spider in my empty cricket keeper w no lid. in my garage . It ID'd as a recluse, and had all the symptoms from the bite as well. Still about a month and has not healed.