I blush like no tomorrow. The shade is less of a blush and more of a deep crimson. I blush when I like someone, when I'm angry at someone, when I reminisce about the past, when someone says: "remember, when you...", when I have to address more than two people at once, etc etc.
The bad news is, I don't have a cure. I've just learned to accept it, to a point. As in, if someone mentions it: "Well, yes, and what do you want me to do about it?". It's extra awkward if I'm blushing because I'm addressing someone I like. I think it comes from a place where I don't want them to think badly of me, and so feel awkward saying anything at all, but people will often interpret it as a bad crush. Awkward.
If you can't accept it, I suppose you could have a surgery to stop it. I've heard of it on the radio, some people who find blushing seriously hinders their work (er, poker players?) get a surgery on some glands in their armpits or something like that. I wouldn't go for it. Seems a pretty extreme solution to what is essentially just some red face time.
Leonard Cohen (Bird on a Wire): I have tried in my own way to be free
Mrs Hudson (BBC Sherlock): Sherlock! The mess you've made!