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Headache



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Classification

Olesen and Steiner have published the second edition of the international classification of headache disorders in 2004 in the Journal of Neurology, Neurosurgery and Psychiatry (Journal of Neurology Neurosurgery and Psychiatry 2004;75:808-811)

Based upon this consensus statement headaches are classified into primary and endary

Table 1 - Classification of primary headaches (first level, with selected disorders at second and third levels)

ICHD-II code ICD-10NA code Diagnosis

1. [G43] Migraine
1.1 [G43.0] Migraine without aura
1.2 [G43.1] Migraine with aura
1.5.1 [G43.3] Chronic migraine
2. [G44.2] Tension-type headache (TTH)
2.1 [G44.2] Infrequent episodic tension-type headache
2.2 [G44.2] Frequent episodic tension-type headache
2.3 [G44.2] Chronic tension-type headache
3. [G44.0] Cluster headache and other trigeminal autonomic cephalalgias
3.1 [G44.0] Cluster headache
3.2 [G44.03] Paroxysmal hemicrania
4. [G44.80] Other primary headaches
4.5 [G44.80] Hypnic headache
4.6 [G44.80] Primary thunderclap headache
4.7 [G44.80] Hemicrania continua
4.8 [G44.2] New daily-persistent headache (NDPH)

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Table 2 - Classification of secondary headaches (first level, with selected disorders at second and third levels)

ICHD-II code ICD-10NA code Diagnosis [and aetiological ICD-10 code]

5. [G44.88] Headache attributed to head and/or neck trauma
5.1 [G44.880] Acute post-traumatic headache
5.2 [G44.3] Chronic post-traumatic headache
5.3 [G44.841] Acute headache attributed to whiplash injury[S13.4]
5.4 [G44.841] Chronic headache attributed to whiplash injury[S13.4]
6. [G44.81] Headache attributed to cranial or cervical vascular disorder
6.2.2 [G44.810] Headache attributed to subarachnoid haemorrhage (SAH)[I60]
6.4.1 [G44.812] Headache attributed to giant cell arteritis (GCA)[M31.6]
7. [G44.82] Headache attributed to non-vascular intracranial disorder
7.1.1 [G44.820] Headache attributed to idiopathic intracranial hypertension (IIH)[G93.2]
7.2.1 [G44.820] Post-dural puncture headache[G97.0]
7.4 [G44.822] Headache attributed to intracranial neoplasm[C00-D48]
7.6.2 [G44.82] Post-seizure (post-ictal) headache[G40.x or G41.x to specify seizure type]
8. [G44.4 or G44.83] Headache attributed to a substance or its withdrawal
8.2 [G44.41 or G44.83] Medication-overuse headache (MOH)
9.   Headache attributed to infection
9.1.1 [G44.821] Headache attributed to bacterial meningitis[G00.9]
9.4.1 [G44.821] Chronic post-bacterial meningitis headache[G00.9]
10. [G44.882] Headache attributed to disorder of homoeostasis
11. [G44.84] Headache or facial pain attributed to disorder of cranium, neck, eyes, ears, nose, sinuses, teeth, mouth, or other facial or cranial structures
11.2.1 [G44.841] Cervicogenic headache[M99]
12. [R51] Headache attributed to psychiatric disorder
12.1 [R51] Headache attributed to somatisation disorder[F45.0]
12.2 [R51] Headache attributed to psychotic disorder[code to specify aetiology]
13. [G44.847, G44.848 or G44.85] Cranial neuralgias and central causes of facial pain
13.1 [G44.847] Trigeminal neuralgia
14. [R51] Other headache, cranial neuralgia, central or primary facial pain
14.1 [R51] Headache not elsewhere classified
14.2 [R51] Headache unspecified

Please find more information on headache on the following web pages.
IASP Pain Update - Migraine; September 2001 (Volume IX, No. 3); Authors: P.S. Sandor, R. Agosti, and J. Schoenen

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References

 

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