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5. HEADACHE ATTRIBUTED TO HEAD AND/OR NECK TRAUMA 6. HEADACHE ATTRIBUTED TO CRANIAL OR CERVICAL VASCULAR DISORDER 7. HEADACHE ATTRIBUTED TO NON-VASCULAR INTRACRANIAL DISORDER 7.1. Headache attributed to high cerebrospinal fluid pressure 7.2. Headache attributed to low cerebrospinal fluid pressure7.3. Headache attributed to non-infectious inflammatory disease7.4. Headache attributed to intracranial neoplasm [C00-D48]7.5. Headache attributed to intrathecal injection [G97.8] 7.6. Headache attributed to epileptic seizure [G40.x or G41.x to specify seizure type] 7.6.1. Hemicrania epileptica [G40.x or G41.x to specify seizure type] 7.6.2. Post-ictal headache [G40.x or G41.x to specify seizure type] 7.7. Headache attributed to Chiari malformation type I (CM1) [Q07.0] 7.8. Syndrome of transient Headache and Neurological Deficits with cerebrospinal fluid Lymphocytosis (HaNDL) 7.9. Headache attributed to other non-vascular intracranial disorder Bibliography and references8. HEADACHE ATTRIBUTED TO A SUBSTANCE OR ITS WITHDRAWAL 9. HEADACHE ATTRIBUTED TO INFECTION 10. HEADACHE ATTRIBUTED TO DISORDER OF HOMOEOSTASIS 11. HEADACHE OR FACIAL PAIN ATTRIBUTED TO DISORDER OF CRANIUM, NECK, EYES, EARS, NOSE, SINUSES, TEETH, MOUTH OR OTHER FACIAL OR CRANIAL STRUCTURES 12. HEADACHE ATTRIBUTED TO PSYCHIATRIC DISORDER 

IHS	Diagnosis	ICD-10
7.6.1	Hemicrania epileptica [G40.x or G41.x to specify seizure type]	G44.82

Diagnostic criteria:

Headache lasting seconds to minutes, with features of migraine, fulfilling criteria C and D
The patient is having a partial epileptic seizure
Headache develops synchronously with the seizure and is ipsilateral to the ictal discharge
Headache resolves immediately after the seizure

Comment:

Synchronous ipsilateral headache with migrainous features occurring as an ictal manifestation of the seizure discharge is recognised, albeit rare. Diagnosis requires the simultaneous onset of headache with electroencephalographically-demonstrated ictal discharge.

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IHS vs. ICD-10

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

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

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