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.
I didn’t expect to faint at the sight of my son’s blood. As a mother, my job
is to nurse boo-boos -- and when when my son came to me after smashing his
thumb a few months ago, I prepared to do my best Florence Nightingale. Then I
saw the blood.
The room began to spin. I broke out in a cold sweat. I felt all the color
drain from my face. After yelling upstairs to my husband to take over, I slid
to the kitchen floor.
Psychologists don’t know exactly why up to 15% of us experience the plunge
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: