Is it normal that i blush all the time?

Ever since my adolescence, I've had problems with blushing. I do it both deeply and easily, so much so that simply typing this is proving to be somewhat difficult. It has gotten to the point where I can barely talk to someone, even someone I know, and not blush. Simply making eye-contact (especially with women, but guys too sometimes) is enough to get it started, and when I realize that I'm doing it, it gets exponentially worse. IIN?