Kitt, thanks for replying. I do indeed know this about Raynaud's. Based on blood work my rheumatologist has ruled out any underlying condition. I have what's known as Raynaud's Phenomenon (or Syndrome) rather than Raynaud's Disease. For this I'm grateful!

I'll be seeing the rheumo again in a couple of weeks so perhaps will get more insight. But I'm fairly sure that I've got two things going on at once. And while like any body systems they're surely interconnected, I have a feeling that we're dealing with separate etiologies. As obscure as those might be.

Oh well!