http://www.georgetownuniversityhospital.org/deptbody.cfm?id=1596
 This Is A Repeat - Georgetown University Hospital
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 As a result of a sympathectomy, the hands will not perspire, at all. Many patients find that they have to put lotion on their hands to keep them moist. Also, many patients notice the absence of facial sweating as well. The sympathetic chain is not identical in everyone, thus there is variability in postoperative changes in sweating. The procedure is associated with compensatory sweating. Although the literature would suggest this happens in 30-80 percent of patients. We tell all of our patients that we believe it may be 100%. Some patients state that this improves over time, but no one can predict one's response to sympathectomy. Even with compensatory sweating, most patients are very satisfied with the procedure. The most common location for compensatory sweating is along the lower back, behind the knees and on the abdomen.

Besides compensatory sweating, there are other complications associated with this procedure. For the most part, they are rare. They include, but are not limited to, pneumothorax, bleeding infection, Horner's syndrome, gustatory sweating, and even bradycardia.
 