Brown Recluse spider bites react differently with different people. I myself was bitten by one 2 years ago on the inside of my right thigh just above the knee. My entire knee area turned black and blue for several days. It itched terribly, but was never what I would call painful. There is no "Anti Venom or cure" for Brown Recluse, you just try to keep it from getting infected. I took antibiotics for about 2 weeks. Sometimes with Brown Recluse bites, the skin will actually die and rot away leaving a gash or hole where the bite was. That did not happen with me. The bite healed up, and left no physical signs.
We have a lot of Brown Recluse spiders in my area. It's what everyone around here is scared of, (Central Tennessee Area.) Some people seem to be more allergic or susceptible to the bites than others are. And I've been told also, that sometimes the spider will not necessarily release all of its venom, but only deliver a small dose.
I personally hate spiders. I will pick up a snake (even if it bites) with no problem, but spiders give me the willies.