Social Security often reviews cases to see if someone is still disabled under their rules. This is becoming very common now days. When Social Security reviews a case to determine whether someone is still disabled, Social Security may find that the medical evidence still shows that someone is disabled for work or may find that someone has improved to the point that he or she is no longer disabled under their rules. It just depends on the case. Right now, there are a lot of reviews being done, and it just depends on what Social Security observes. They often do review cases, and because of that there is no guarantee that benefits will last forever.