As with any surgical procedure there are risks, for example cognitive changes, speech problems and increased risk of stroke, these should all be discussed with your doctor in advance.
There is a 2-3% risk of a serious and permanent complication such as paralysis, seizure or infection, or changes in personality, memory and thinking. You also need to bear in mind that there are no guarantees your symptoms will improve after surgery, although in a majority of cases they do.
