Pain in the middle of head, what is this?

Lots of things.: Depending on where the pain is more specifically, what other symptoms come along with it, how long it has been there, and what it feels like, a diagnosis would be more possible. The kinds of common mostly harmless things that cause occasional headache include tension headache, eye strain, and sinus problems. If it is very severe, go to the er. If you have never had this before, call your doctor.