I have been experiencing headaches on the left side of my head . The headache is constant and encompasses the entire left side of my head from the base of my skull to the front of my forehead and behind my left eye. I have to take ibuprofen several times a day and get very little relief. It basically just takes the edge off the headache. The headache creates a strange sensation that is hard to describe. The right side of my head is completely fine, no pain what so ever and left side is pulsating. It progressively gets worse throughout the day.