Hi can anyone help?

[BlueLady6110]

I was diagnosed with Raynauds & Erythromelalgia 2019 & also have MS, December my fingers swelled up like sausages really sore tight & some red dots under skin, went to GP who booked me in for ANA blood tests which i had last friday. It's not getting better when im warmer and a rash keeps coming up on my arm ive never experienced anything like this with raynauds or EM any ideas what it could be ? Thankyou