The Journal of Headache and Pain

Official Journal of the "European Headache Federation" and of "Lifting The Burden - The Global Campaign against Headache"

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Volume 15 Supplement 1

Abstracts from the 4th European Headache and Migraine Trust International Congress: EHMTIC 2014

Open Access

EHMTI-0120. Are the IHS’ recommendations for evaluation and registration of adverse events in drug trials in migraine being followed ?

  • P Tfelt-Hansen1 and
  • J Kauffmann2
The Journal of Headache and Pain201415(Suppl 1):G37

Published: 18 September 2014


Public HealthAdverse EventInternal MedicineMigraineDrug Treatment


In 2008 the International Headache Society (IHS) published guidelines on “evaluation and registration of adverse events in clinical drug trials in migraine (Cephalalgia 2008; 28: 683-688). In this study we evaluated whether these guidelines on adverse events (AEs) subsequently were adhered to by reviewing , randomized, controlled trials (RCTs) on migraine drug treatment published in the three leading headache journals for the last 4 years.


We reviewed all double-blind RCTs on acute and preventive migraine drugs appearing in 2010, 2011, 2012, and 2013 in Headache, Journal of Headache and Pain, and Cephalalgia.

We noted for each RTC the presentations of 5 parameters: number of patients with any AEs, any serious AEs, patients withdrawn because of AEs, intensity of AEs, see results.


At total of 23 RCTs , 17 acute treatment RCTs and 6 preventive RCTs, were reviewed.

Patients with any AEs were reported in 16 of 23 RCTs; any serious AEs were reported in 8 of 23 RCTs; patients withdrawn because of AEs were reported in 5 of 23 RCTs; and intensity of AES was mentioned in 8 of 23 RCTs (in most cases e.g. most AEs were mild and moderate).


It is noteworthy that even such an obvious major parameter for tolerability, patients with any AES, was only reported in 70% (95% CI: 51 – 89%) of the reviewed RCTs. In addition, intensity of AEs is only very briefly reported.

No conflict of interest.

Authors’ Affiliations

Neurology, Danish Headache Center, Glostrup, Denmark
Neurology, North zealand Hospital, Hillerød, Denmark


© Tfelt-Hansen and Kauffmann; licensee Springer. 2014

This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


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