>> it may be counterintuitive. the number one reason people see doctors like me, neurologists, neurosurgeons. people start to take medications. they start to take them over and over again. what you find is rebound headaches, a frequent headaches caused by overuse of these types of medications, over-the-counter medications. they may take a medication in the morning, advil, take a sinus medication in the afternoon and a nighttime medication in the evening. they just start to get into this pattern so much so that they become dependent on it. what's surprising is how frequent this problem is. when...