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Related Experiment Videos

The hemicrania continua diagnosis.

J A Pareja1, F Antonaci, M Vincent

  • 1Hospital Ruber Internacional, Servicio de Neurología, Madrid, Spain. jpg03m@saludalia.com

Cephalalgia : an International Journal of Headache
|February 15, 2002
PubMed
Summary

Hemicrania continua (HC) is a strictly unilateral headache with a complete response to indomethacin. Atypical cases resistant to indomethacin may represent a different condition, leading to the proposed term Hemicrania continua vera.

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Area of Science:

  • Neurology
  • Headache Medicine

Background:

  • Hemicrania continua (HC) etiology and pathogenesis remain largely unknown despite over 16 years since its initial description.
  • Key diagnostic features include strictly unilateral headache and an absolute response to indomethacin.
  • Ancillary features include a paucity of accompaniments, lack of precipitating factors, and a notable female preponderance.

Purpose of the Study:

  • To clarify the diagnostic criteria for Hemicrania continua.
  • To address controversies regarding atypical presentations, specifically indomethacin-resistant cases.
  • To propose a refined classification for HC and related headache disorders.

Main Methods:

  • Clinical case review and analysis of diagnostic features.
  • Discussion of existing literature and diagnostic controversies.

Related Experiment Videos

  • Differential diagnosis comparison with other unilateral headaches and chronic daily headache (CDH) classifications.

    • Main Results:

    • Unilaterality and absolute indomethacin response are crucial for HC diagnosis.
    • Indomethacin-resistant hemicrania may not be true HC, suggesting a need for separate classification.
    • HC shares features with chronic paroxysmal hemicrania, including indomethacin responsiveness.

    Conclusions:

    • Propose "Hemicrania continua vera" for typical HC with absolute indomethacin response.
    • Suggest "Hemicrania generis incerti" for indomethacin-resistant cases after ruling out other diagnoses.
    • Recommend classifying HC within the IHS group 3, distinct from most chronic daily headaches.