What Causes Sweating A Pain In Feet?

MY NERVES MAKE MY FEET SWEAT, WHICH IN TURN CAUSES PAIN, TRIED ALL MEDS, ETC...SEEN ALL SPEACIALISTS, HAD A SYPATHETIC NERVE BLOCK DONE, STILL MY FEET SWEAT REALLY BAD AND i KNOW IT IS NERVE RELATED, IT SEEMS LIKE IT GOT WORSE AFTER i HAD BOTOX DONE, IS IT POSSIBLE THERE IS PROBLEMS WITH THE NERVES IN MY BRAIN