Yes, they sure can. HOWEVER, you must see a professional, certified massage therapist and make them aware of the shunt. Then they must take great care not to interfere or disturb it (which they should know how to do). They can be very effective at alleviating pain. This article talks about positioning on the table and such things that could be helpful for you. https://www.massagetoday.com/articles/10373/Working-with-Central-Nervous-System-Dysfunction