A Research Study To Compare Two Kinds Of Daily Headache
A Research Study To Compare Two Kinds Of Daily Headache
Chronic daily headache has been classified into several categories. One category is of sudden
 onset and is called New Daily Persistent Headache (NDPH). Another category of daily headache
 evolves gradually and is called Transformed Migraine (TM). This research study is being
 conducted to compare people with these two kinds of daily headache in order to improve our
 understanding of these conditions.
Inclusion Criteria:

 -  Male and female patients aged 14-65, inclusive

 -  Diagnosis of NDPH or TM according to the Silberstein-Lipton criteria.

 -  Ability to read and understand an informed consent form and study procedures

 Exclusion Criteria:

 -  Pregnancy

 -  Subjects with any disease or condition that would result in unreliable data or
 confound the data obtained for this study, as determined by the principal
 investigator.