Diabetes? Lupus? MS? What's causing all of these symptoms and pain? Started with a simple hairline fracture?

I hairline fractured my Left arm Radius about 3 weeks ago. At first I thought it was a sprain or bruise so I didn't have it looked at immediately. My hand had been tingling and feeling numb and as the pain increased my fingers got colder and started turning blue, so I went to the dr. They confirmed it was a hairline fracture, it was affecting vascularity and had injured the radial nerve. I have developed wrist and finger "drop" (Radial Nerve Palsy) since the injury, but I have also been having a lot of other symptoms appear. I have peripheral neuropathy in my other extremities and I've been very sensitive to heat and cold. My hands will get ice cold and discolored for no reason. I've been having very dry, cracking, peeling and flaking skin, especially on my hands, feet and face. I don't know if it's fluid retention or just swelling but from the waist down there is excessive swelling and is painful in my feet and ankles. And over the last 3 days black spots have been popping up all over my chest, torso, back and arms with only a few on my face or legs. They look like black pimples under the surface or moles almost, they seem to have a "root" and only retract back into the skin when squeezed. What could be causing all of this?? I know nerve damage takes time to heal but this feels like more than just nerve damage. And i can't find any other skin conditions that look like what I have. Any help, ideas, suggestions are very appreciated!