Hypnic headache (HH) is a rare primary headache disorder (primary headache disorders are those that cannot be attributed to another condition.) It's most identifying feature is that it only develops during sleep and wakes the sufferer.
The International Headache Society's International Classification of Headache Disorders, 2nd Edition (ICHD-II), is the "gold standard" for diagnosing and classifying headache disorders. Here are the description, diagnostic criteria, and symptoms of HH as...Read more
Full Question:I am 30 years old. For the past two years, I have been waking up with terrible headaches (about 85% of the time). The pain is... Read more »
Source: ADAM Encyclopedia
Diagnosing the cause of persistent daily headache can be difficult. People who visit the emergency room with disabling headache may be misdiagnosed... Read more »