Kimberley: Could I have PTSD or trauma? This is a question that came up a lot following a recent episode we had with Caitlin Pinciotti, and I’m so happy to have her back to talk about it deeper. Let’s go deeper into PTSD, trauma, what it means, who has it, and why we develop it. I’m so happy to have you here, Caitlin. Caitlin: Yes, thank you for having me back. INTRODUCING CAITLIN PINCIOTTI Kimberley: Can you tell us a little bit about you and all the amazing things you do? Caitlin: Of course. I’m an assistant professor in the Psychiatry and Behavioral Sciences Department at Baylor College of Medicine. I also serve as the co-chair for the IOCDF Trauma and PTSD in OCD Special Interest Group. Generally speaking, a lot of my research and clinical work has specifically focused on OCD, PTSD, and trauma, in particular when those things intersect, what that can look like, and how that can impact treatment. I’m happy to be here to talk more specifically about PTSD. WHAT IS PTST VS TRAUMA? Kimberley: Absolutely. What is PTSD? If you want to give us an understanding of what that means, and then also, would you share the contrast of—now you hear more in social media—what PTSD is versus trauma? Caitlin: Yeah, that’s a great question. A lot of people use these words interchangeably in casual conversation, but they are actually referring to two different things. Trauma refers to the experience that someone has that can potentially lead to the development of a disorder called post-traumatic stress disorder. When we talk about these and the definitions we use, trauma can be sort of a controversial word, that depending on who you ask, they might use a different definition. It might be a little bit more liberal or more conservative.  I’ll just share with you the definition that we use clinically according to the DSM. Trauma would be any sort of experience that involves threatened or actual death, serious injury, or sexual violence, and there are a number of ways that people can experience it. We oftentimes think of directly experiencing trauma. Maybe I was the one who was in the car accident. But there are other ways that people can experience trauma that can have profound effects on them as well, such as witnessing the experience happening to someone else, learning that it happened to a really close loved one, or being exposed to the details of trauma through one’s work, such as being a therapist, being a 911 telecommunicator, or anyone who works on the front lines.  That’s what we mean diagnostically when we talk about trauma. It’s an event that fits that criteria. It can include motor vehicle accidents, serious injuries, sexual violence, physical violence, natural disasters, explosions, war, so on and so forth—anytime when the person feels as though their bodily integrity or safety is at risk or harmed in some way.  Conversely, PTSD is a mental health condition. That’s just one way that people might respond to experiencing trauma. In order to be diagnosed with trauma, the very first criterion is that you have to have experienced trauma. If a person hasn’t experienced an event like what I described, then we would look into some other potential diagnoses that might explain what’s going on for them, because there are lots of different ways that people can be impacted by trauma beyond just PTSD. PTSD SYMPTOMS AND PTSD DIAGNOSIS  Kimberley: Right. What are some of the specific criteria for being diagnosed with PTSD? Caitlin: PTSD is comprised of 20 potential PTSD symptoms, which sounds like a lot, and it is. It can look really different from one person to the next. We break these symptoms down into different clusters to help us understand them a little bit better. There are four overarching clusters of PTSD symptoms. There’s re-experiencing, which is the different ways that we might re-experience the trauma in the present moment,