Can someone tell me what is causing my blushing..?

I blush about everything. Someone can say something to me and I'll start blushing. I wouldn't even feel nervous or anxious about talking to someone, but the blushing makes me more self conscious. I consider myself to be awkward, but I don't find myself to be socially anxious whenever I do start blushing. I can get nervous when I'm talking to a stranger or someone I find attractive, but I don't understand why my body gets extra on me and trigger blushing. Any ideas as to what my be causing this and/or ways to get this issue under control