I am a 48 year old male, healthy but I have angina. I get hot even when its cold, sometimes I sweat in the head but mostly I just feel like I'm burning up all over my body from the inside out. WHY?.
I also have more frequently stinging in my centre chest when walking and getting short of beath along with a huge headache. WHY??
Thank you.

This could be cardiac related. Please make an appointment with your cardiologist as soon as possible.