I Have Been Experiencing A Sharp Pain At The Top

I have been experiencing a sharp pain at the top rear right side of head. I first experienced it a year ago for a few days and then it went away. But over the past few weeks I have been experiencing it a few times a day. It only last for a few seconds that are more intense and then subsides within 5 seconds. During the episode I am not overly exerting energy but generally at rest.