Newer techniques include the use of clips instead of complete transsection of the nerve but reversal is not always possible as nerve destruction can be quick and compensatory disease may not be immediate.
The main complications with sympathectomy include compensatory sweating, phantom sweating, gustatory sweating, Horner syndrome, and neuralgia.
Management of Hyperhidrosis
Aamir Haider, Nowell Solish and Nicholas J. Lowe
www.sweatclinicsofcanada.com/Book.pdf