I have trouble understanding the concept of empathy, but I've been told that I can be very empathetic. I know that when I was young, about 1-1/2 or 2 years old, my mother and my grandparents on her side were involved in a serious car accident, and even though I wasn't anywhere near that accident, I was deeply affected as well. My grandmother took the brunt of the impact, with what I believe were back, brain, spinal, and leg injuries. My mother came out of it with back injuries and PTSD, as well as newly-developed phobias and from what I can tell, an anxiety disorder. I'm not sure how my grandfather was affected, but as far as I know he didn't suffer any serious injuries. He was probably quite shaken up though.
Before the accident, I was a fairly happy little kid, albeit non-verbal and with a strangely high pain threshhold (these were some of the first signs that I was on the spectrum). After the accident, I developed severe separation anxiety, and as a result I became extremely attached to my mother. It wasn't until I was about 5-1/2 that I started to shed this separation anxiety.
Strange, huh?