What happens if someone has “blocked out” the specifics of a trauma—or it happened so long ago that the details are fuzzy—but they have the behavioral symptoms of PTSD? Is it still possible to treat them?

Q. What happens if someone has “blocked out” the specifics of a trauma—or it happened so long ago that the details are fuzzy—but they have the behavioral symptoms of PTSD? Is it still possible to treat them?