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From the Unit of Sleep Medicine and Epilepsy (Drs. Manni and Terzaghi) and Headache Unit and University Centre for Adaptive Disorders and Headache (Drs. Sances and Ghiotto), IRCCS "C. Mondino" Foundation, Institute of Neurology, Pavia, and Department of Neurology and Otolaryngology (Dr. Nappi), University "La Sapienza", Rome, Italy.
Address correspondence and reprint requests to Dr. R. Manni, Unit of Sleep Medicine and Epilepsy, C. Mondino Institute of Neurology, Via Palestro 3, 27100 Pavia, Italy; e-mail:raffaele.manni{at}mondino.it
Hypnic headache (HH) occurs exclusively during sleep. Six attacks were recorded during nocturnal polysomnographic (PSG) monitoring of 10 HH patients. The PSG data obtained indicate that the attacks arose directly from sleep: four from non-REM and two from REM sleep. In no patient were the HH attacks found to show any close temporal relationship with sleep-related breathing abnormalities.
Received August 14, 2003. Accepted in final form December 18, 2003.
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