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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Definition of Terms

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S

Scintillation

Visual hallucinations that are bright and fluctuate in intensity, often at approximately 8-10 cycles/second. They are typical of migraine aura.

Scotoma

Loss of part(s) of the visual field of one or both eyes. Scotoma may be absolute (no vision) or relative (obscured or reduced vision).

Stab of pain

Sudden pain lasting a minute or less (usually a second or less).

Substance

Drug, chemical, wine, vapour, etc.

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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