hey i had hyperhydrosis which i hated and lived with utnil i was 13. I then had an operation- endoscopic thoracic sympathectomy to fix in 2000 and i worked great had it twice for each hand. They do still sweat a tiny bit in summer on 40 degree days but apart from that perfect. Would thorughly recommend it. I am now doing nursing and i am so glad i dont have it anymore dont think i could live with it if i still had it. The only problem with my hands are they alway cold and pts dont like that but its not a side affect i had that before the operation. The only side effect from the operation was i had a half red face when i played sport between the two operations but after the second operation that went away..