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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1. MIGRAINE 2. TENSION-TYPE HEADACHE (TTH) 2.1. Infrequent episodic tension-type headache 2.2. Frequent episodic tension-type headache 2.3. Chronic tension-type headache 2.4. Probable tension-type headache 2.4.1. Probable infrequent episodic tension-type headache 2.4.2. Probable frequent episodic tension-type headache 2.4.3. Probable chronic tension-type headache Bibliography and reference3. CLUSTER HEADACHE AND OTHER TRIGEMINAL AUTONOMIC CEPHALALGIAS 4. OTHER PRIMARY HEADACHES 

IHS	Diagnosis	ICD-10
2.4.3	Probable chronic tension-type headache	G44.28

Diagnostic criteria:

Headache occurring on ≥15 days per month on average for >3 months (≥180 days per year) and fulfilling criteria B-D
Headache lasts hours or may be continuous
Headache has at least two of the following characteristics:
1. bilateral location
2. pressing/tightening (non-pulsating) quality
3. mild or moderate intensity
4. not aggravated by routine physical activity such as walking or climbing stairs
Both of the following:
1. no more than one of photophobia, phonophobia or mild nausea
2. neither moderate or severe nausea nor vomiting
Not attributed to another disorder but there is, or has been within the last 2 months, medication overuse fulfilling criterion B for any of the subforms of 8.2 Medication-overuse headache

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.

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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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