When someone who has posttraumatic stress disorder (PTSD) tells you about the illness, she also entrusts you with an important piece of her life. For most people, having PTSD is not something that pops up in casual conversation. Even for someone who has PTSD who is ready to talk about their experience fears the possible unsupportive response. I’m convinced that in most situations, people simply don’t know how to react to PTSD disclosures, and are reluctant to ask. Here is what I’d like everyone to about talking with someone who has PTSD.