Since I had never heard of this, I sniffed around on the net and found several sources. I guess my first question would be; was this disease "self diagnosed" or vet? Reading the symptoms, it appears to me that this one would be a really easy one to mis-diagnose.
This should keep you busy.....
http://www.msstate.edu/dept/poultry/diagext.htmHere is a site that deals primarily with infection on the human body, but as is often the case a similar treatment (only in MUCH smaller doses) is effective in poultry.
http://en.wikipedia.org/wiki/ErysipelasAbove references taken from a webcrawler search for disease listed.
Good Luck,
David