Yes, I get red fingers and toes sometimes. My doctor was concerned... when I had that lupus reaction. In my case it is just the first joint of the fingers. Sometimes at night I have throbbing
in my hands. I don't get it in my feet though. I will get throbbing in my neck or upper jaw too. I use the magnesium lotion for that neck discomfort with a good deal of success.
I have a red deep rash/discoloration on my forearms. It doesn't itch or hurt or burn, or go away with hydrocortisone lotion or antifungals. It appears below the skin.
My doctor said it is a lupus thing most likely. It often blanches out when I lie down, or raise my arms up.( it resembles tinea versicolor, but it is not that-- and is more pink). This mystery discoloration, was much worse on lisinopril, which was poisoning me, and improved markedly when I stopped that. It just hasn't gone away completely.

At night my feet are either too hot or too cold. I just stick them out from the covers or put them in. Been doing that for years...it is just automatic for me.

The flushing can be a serotonin thing. If you take an SSRI, Cymbalta, or amitriptyline/nortriptyline...you could flush too.