I Am An Active 50 Year Old Female Who Gets

I am an active 50 year old female who gets intermittant "scalp searing head pain" on my right side of the back of my head. It seems almost daily and it lasts for a few to several minutes seconds each time. I do not get headaches with these so it is perplexing. I am an active scuba dive instructor so it bothers me that it might affect me. I do get slightly narced (symtoms of nitrogen narcosis) when I dive 100ft or below or dive really cold water but if I take my time descending, it does not happen. I am just wondering if my occassional head pains are any way related or should I worry.