What Causes Severe Sweating From Birth?

I am hot all the time and yes I am old 64 but I have been hot sweats from birth. Its is not a flash... I havw to ware a head band to keep sweat from running into my eyes. I have thyroid growths and take medican for that, When doing a ultra sound on the large artirey in stomach they for a growth sticking out of my rt. kidney and one on my practice. I have palplups removed from my butt. They watch all growths to see if they change is sizes over the years but that is about it A few years ago I had a 50 pd weight loss but was not trying to and it seem to take my muscles with it. Eatting made me sick sick if I did scik if I didnt. Was happy to louse the weight as I am extremely over weigh. Have a spinal problem along with feet knees and hips so really do not exercise well. This being hot is very hard everyone has coats on and I have off that I can wear very short hair as I sweat so much, It keeps getting worse.