What characterizes chronic daily headaches?
There are four types of the primary chronic daily headaches. One is called chronic or transformed migraine, and that’s a disorder where a person starts out with episodic migraine, and their migraine gets worse over time. The second one is called chronic tension-type headache, and that’s a disorder where a person starts out with episodic tension-type headache, and their headaches get worse and comes more frequently over time. The third disorder is called new daily persistent headache, where people out of the blue go from basically not been headache people at all to having headaches that never go away. So you wake up one morning with a headache, and that’s it. It’s there all the time for months or years. And that’s a very difficult disorder to treat. The final kind of chronic daily headache is a disorder called hemicrania continua, which is characterized by pain on one side of the head that waxes and wanes in severity. When the pain gets severe, very often people report that their eye te
