An official at his high school has said that Sandy Hook shooter Adam Lanza appeared to feel no physical pain, suggesting he may have been congenitally insensitive to it. Research tells us that such ...

Being unable to feel pain sounds enticing, but people with congenital analgesia frequently bite their tongues, break bones or burn themselves without being aware of it, sometimes leading to severe ...

To the editor: In the new movie "Novocaine," when the girl of his dreams gets kidnapped, a man turns his inability to feel pain into an unexpected advantage. But the premise is not comical when such a ...