I have liitle ringing sensation in both the years. But what worries me more is there is an unforeseen solid bump on top left back side of the skull. It is causing a little pain while I press it. And there is neck pain associated with headache on the left side. It is felt like muscles are compressed sometimes or loosely held sometimes at these spots. It gets better for sometime after a hot shower. I am kind of getting these headaches persistently which lasts for 2 weeks approx and relaxes for few days. Any suggestions whether it is associated with some serious problem.