You know what...I've heard it is and I've heard it isn't, so that equals to me that it might be, which also equal that I'll treat it as if it is contagious. I have only ever had one snake with a RI, which was my Coastal Rosy, and that was a few years back anyways. It took three trips to the vet to get rid of it, because it kept coming back. The last time I took her I asked for extra Byatril (sp?) and I dosed her every three days for six weeks. It is, IMO-which is no way professional, caused by environmental issues, like cleaning solutions not fully rinsed out of his/her cages, or stress from too low of humidity, or weak temps.

One thing I will say is, if you're going to treat her...do it for at least five-six weeks every three days to nip it good. Good luck