Chronic Paroxysmal Hemicrania: The First Possible Bilateral Case

There are three headaches syndromes that are typically
characterized by strictly unilateral and always same-sided attacks:
cluster headache, “cervicogenic” headache, and chronic paroxysmal
hemicrania (CPH). In rare cases, cluster headache also occurs
bilaterally; “cervicogenic” headaches probably as well. We present
a patient with a probable bilateral CPH. To our knowledge no such
case has previously been described.