Blotchy Skin--Help!

I am 26 years old and have always had blotches whenever I am nervous, excited, hot, stressed and sometimes for no reason at all, just a slight headache. It seems to have gotten worse as I have gotten older. I have become so self-conscious. I am a teacher and my students sometimes think something is wrong when I turn blotchy. I am constatnly covering my neck with my hand or hair when I am talking to someone. I also have high blood pressure and take Toprol. I want to talk to my doctor about propranolol. I was wondering if there is any kind of surgery for this. I am sure I heard of a surgery where they clip part of a blood vessel or something to get rid of adrenergic urticaria. Does anyone know?
It is nice to see that I am not alone. Sometimes I feel like a freak!