Board Thread:Theories and Speculation/@comment-29766629-20160826145123

Let's say if someone was put under a genjutsu to not feel pain by someone with Sharingan abilities. How could that person escape the genjutsu? Even if he knows he is under effect, he still can't feel pain, so would it be possible for him to escape? If not, does it mean that he will stay under genjutsu forever or until the person that used it dies? 