Some people develop post-traumatic stress disorder (PTSD) after living through a shocking or dangerous experience. When you're in danger, your body's natural response is to feel scared.
That's when your body turns on its "fight or flight" response. In the face of something life threatening, it revs up your heart rate, sends blood to your muscles to get ready to run, and amps up stress hormones to help fight off bleeding and infection in case you get hurt. Your brain tells your body that some of its functions are less important: Parts of the brain that store memory, emotion, and thinking get "turned off" for a little while.
Alison Zollars Arthur knows better. As the owner of a skin and body wellness center, the 44-year-old Houston resident regularly counsels her clients about the importance of a healthy diet. But too often, she pigs out on fast food, salty snacks, and wine.
"If I have one glass of wine, I will have more," she says. "The voice saying, 'You really shouldn't,' shuts down, and I can do anything I want to."
That "voice" is the dorsolateral prefrontal cortex, an area of the brain that handles planning,...
Experiencing the sudden death of a close friend or family member
In the first month after a severe traumatic event, symptoms similar to PTSD are called an "acute stress disorder." If those symptoms arise or persist beyond the first month -- or develop even years after the event -- the term PTSD is used. Not everyone who lives through or sees a scary or dangerous experience develops PTSD.
There are four main "clusters" of symptoms that define PTSD, including:
Re-experiencing the traumatic event
Hyper-arousal (muscular and emotional tension)
Avoiding situations that may be reminders of the event
Persistent negative effects on thinking and mood (e.g. emotional numbing)
To be diagnosed with PTSD, specific symptoms from the following list must occur and last at least a month: