I have purple splotchy knees most of the time. I have been diagnosed with Raynauds Phenomenon. I was at my Rheumatologist this week and asked if the purple knees had to do with the Raynauds. All she said was no, it is just something you have to live with . What the heck does this mean? Why do I have purple knees?? I have also been diagnosed with fibromyalgia.