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

A1. MigraineA2. Tension-type headacheA3. Cluster headache and other trigeminal autonomic cephalalgiasA6. Headache attributed to cranial or cervical vascular disorderA7. Headache attributed to non-vascular intracranial disorderA8. Headache attributed to a substance or its withdrawalA8.1. Headache induced by acute substance use or exposureA8.1.10. Headache as an acute adverse event attributed to medication used for other indicationsA8.5. Chronic post-substance exposure headacheA9. Headache attributed to infectionA10. Headache attributed to disorder of homoeostasisA11. Headache or facial pain attributed to disorder of cranium, neck, eyes, ears, nose, sinuses, teeth, mouth or other facial or cranial structuresA12. Headache attributed to psychiatric disorderA13. Cranial neuralgias and central causes of facial pain

Drugs that may induce headache or worsen pre-existing headache

Acetazolamide	Codeine	Interferons	Ondansetron
Ajmaline	Didanosine	Isoniazid	Paroxetine
Amantadine	Dihydralazine	Meprobamate	Pentoxifylline
Antihistaminics	Dihydroergotamine	Methaqualone	Perhexiline
Barbiturates	Dipyridamole	Metronidazole	Primidone
Beta-interferon	Disopyramide	Morphine and derivatives	Prostacyclines
Bromocriptine	Disulfiram	Nalidixic acid	Ranitidine
Caffeine	Ergotamine	Nifedipine	Rifampicin
Calcium antagonists	Etofibrate	Nitrofurantoin	Sildenafil
Carbimazol	Gestagens	Nitrates	Theophylline and derivatives
Chinidine	Glycosides	Non-steroidal anti-inflammatory drugs	Thiamazole
Chloroquine	Griseofulvin	Octreotide	Trimethoprim + sulfamethoxazole
Cimetidine	Guanethidine	Oestrogens	Triptans
Clofibrate	Immunoglobulins	Omeprazole	Vitamin A

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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