OK, if we're on venmous critters now, I'd like to post something of Fiona's (thanks Fee) from another forum.
We Googled to find out how to treat it and we found an article by a doctor who uses nitroglycerine patches, the ones people use for angina.
The poison in a brown recluse bite is a vasoconstrictor, that is it collapses the capillaries and veins so the flesh dies. The infections are secondary to the initial problem. Nitroglycerine is a vasodilator, it opens the blood vessels allowing the body to flush the toxin out.
We took the article with us to our doctor the next day, he read it and immediately wrote a prescription for the NG patches.
You have to cut the patch to the size of the bite, and only leave it on during the day, take it off at night.
Once we started the treatment the bite stopped increasing in size and gradually subsided over the next three days.
This treatement WORKS folks and I'm not kidding. BR bites are VERY dangerous.