Left Head And Neck Pain Shooting Pain Down The Left Side Of My Head/neck.?

Shooting pain down the left side of my head/neck.? - left head and neck pain

From time to time without prior notice, I have this pain pain in the left front of my head, above the eye, just above my head and began my throat on the left.
I do not know what it is, but sometimes a few times a month, sometimes never in a month. I can 2 to 3 years.