Headache is one of the most common patient complaints heard inside of a neurology office.The overwhelming majority of headaches are “Primary Headaches" such as migraine headaches or tension type headaches. While these forms of headache are painful and at times debilitating, they are ultimately benign, meaning they pose no danger to one’s overall health. Despite this fact, a great number of patients worry that their headache is a "Secondary Headache" – defined as a headache with a serious or even life-threatening underlying cause. As such, the important question is this: When are neurologists concerned that a headache isn't just a headache? Jeffrey Greenberg, M.D., Neurology Division Chief at Saint Peter’s University Hospital in New Brunswick, N.J., is here to answer that question.