Home Introduction Prefaces Introduction to the classification How to Use This Classification Subcommittees and working groups The Classification Table of contents Part I: The primary headaches Part II: The secondary headaches Part III: Cranial neuralgias, facial pain and other headaches Appendix Definition of Terms

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The International Headache Society (IHS) is the world's membership organisation for all whose professional commitment, whatever their discipline, is to helping people whose lives are affected by headache disorders.Visit the IHS website

1. MIGRAINE 1.1. Migraine without aura1.2. Migraine with aura1.3. Childhood periodic syndromes that are commonly precursors of migraine1.4. Retinal migraine 1.5. Complications of migraine 1.6. Probable migraine Aggravating factorsTrigger factors (precipitating factors) Bibliography2. TENSION-TYPE HEADACHE (TTH) 3. CLUSTER HEADACHE AND OTHER TRIGEMINAL AUTONOMIC CEPHALALGIAS 4. OTHER PRIMARY HEADACHES 

Trigger factors

Trigger factors increase the probability of a migraine attack in the short term (usually <48 hours) in a person with migraine. Though some trigger factors have been reasonably well studied epidemiologically (eg, menstruation) or in clinical trials (eg, chocolate, aspartame), causal attribution in individual patients may be difficult.

Sitemap

Consult the Sitemap to learn more about the structure of the classification and its main chapters.

IHS vs. ICD-10

To facilitate headache diagnosis in daily practice, the classification provides the corresponding WHO ICD-10NA codes for each IHS code.

IHS Subcommittee

The Classification Subcommittee prepares and revises the International Classification of Headache Disorders.

Downloads

Extend your electronic library with important IHS publications. All documents may be downloaded free of charge.

Cephalalgia

Cephalalgia is the official journal of the IHS. It contains original papers on all aspects of headache. The journal provides an international forum for original research papers, review articles and short communications.www.cephalalgia.org

IHS Discussion Group

Ask questions and share information about the 2nd edition of the Headache Classification in one of our peer-to-peer forums. To the Discussion Group

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