At random times, especially when I am under emotional stress, I get a shooting pain along the left side of my thigh, neck, and temple. It is very intense and causes me to convulse sometimes. I used to get it all the time when I was little, and over the past few months it has started happening quite frequently again. It just happens all of the sudden and then after a few seconds it will go away, and then come back again. It usually happens about 5 times in a row, getting less intense towards the end.

I have issues with restless leg syndrome and anxiety, if that helps at all.
Thanks.
I am 17 years old.