"Sympathectomy is a technique about which we have limited knowledge, applied to disorders about which we have little understanding." Associate Professor Robert Boas, Faculty of Pain Medicine of the Australasian College of Anaesthetists and the Royal College of Anaesthetists, The Journal of Pain, Vol 1, No 4 (Winter), 2000: pp 258-260
Extensive surgery or burning causes nerve scaring, which may behave like epilepsy of the autonomous nervous system and cause the well known devastating side effects. http://sympathectomy.info/