A couple of weeks ago I went to the GP because my right hand was borked. A little graze hadn't healed for ages, then I got a local infection & was prescribed antibiotics, but although it was no longer hot, I still had stiff, swollen fingers, with red blotches turning scabby, itching like mad & sore bits.
She said infection over, or nearly so. I have Raynaud's. My fingers were in trouble because their blood supply was. Fuck!
I've always had a tendency to cold hands & feet, & need gloves when many others don't, but never anything remotely like this before.
Good news: doing what she said to has resulted in a big improvement. Looks as if she was right. At least I know now.