• Sanjay Prakash, Samir Saini, Kaushikkumar Ramanlal Rana, and Pinaki Mahato.
• Department of Neurology, Medical College, SSG Hospital, O-19, Doctor's Quarter, Jail Road, Baroda, Gujarat, India, 390001. drprakashs@yahoo.co.in
• J Headache Pain. 2012 Aug 1; 13 (6): 477485477-85.

AbstractThe aim of this retrospective study was to provide data on the clinical features and treatment outcomes of patients with NDPH (fulfilling Kung et al.'s criteria). A total of 63 patients were observed during a 5-yr period (2007-2012). More than one-third (35 %) patients had migrainous features; 65 % patients fulfilled the ICHD-II criteria. Both groups were similar in most clinical and epidemiological features. However, migrainous features were more common in patients with a prior history of episodic migraine (though statistically not significant). After a median follow-up of 9 months, 37 % patients showed "excellent" response (no or less than 1 headache per month). Another 30 % patients had "good" response (>50 % reduction in headache frequency or days per month). Excellent response was more in patients with a history of less than 6 months duration (statistically not significant). Patients with a recognized trigger showed better prognosis. Response was better in patients who received intravenous therapy of methyl prednisolone and sodium valproate. We suggest prospective and controlled studies to confirm our observations.

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