Which of these is the bluish or purplish discolouration of the skin?

I thought my Son had this. turned out it was his sheets caused it due to him sweating.

Player #23827070, Raynaud's Syndrome is the one which makes fingers and toes feel cold and numb; it can make the areas look very pale so maybe a little bit blue.

the smurfs have this.

i thought it was called reynard syndrome

That Cøunt, Ray Bumpkin, I've got Raynaud's Syndrome. Although my fingertips look blue from time to time, my feet can turn into absolute blocks of ice, especially in the cold Canadian winter.

new info for me.thanks

Deborah , If I'm not mistaken, Pop Pittman had the exact same thing, may he rest in peace 🙏

Been making too much grape jelly!

smarty pants, tee hee.