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5. HEADACHE ATTRIBUTED TO HEAD AND/OR NECK TRAUMA 6. HEADACHE ATTRIBUTED TO CRANIAL OR CERVICAL VASCULAR DISORDER 6.1. Headache attributed to ischaemic stroke or transient ischaemic attack6.2. Headache attributed to non-traumatic intracranial haemorrhage [I62] 6.2.1. Headache attributed to intracerebral haemorrhage [I61] 6.2.2. Headache attributed to subarachnoid haemorrhage (SAH) [I60] 6.3. Headache attributed to unruptured vascular malformation [Q28] 6.4. Headache attributed to arteritis [M31]6.5. Carotid or vertebral artery pain [I63.0, I63.2, I65.0, I65.2 or I67.0]6.6. Headache attributed to cerebral venous thrombosis (CVT) [I63.6] 6.7. Headache attributed to other intracranial vascular disorderBibliography7. HEADACHE ATTRIBUTED TO NON-VASCULAR INTRACRANIAL DISORDER 8. 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
6.2.1	Headache attributed to intracerebral haemorrhage [I61]	G44.810

Diagnostic criteria:

Any new acute headache fulfilling criterion C
Neurological signs or neuroimaging evidence of recent non-traumatic intracerebral haemorrhage
Headache develops simultaneously with or in very close temporal relation to intracerebral haemorrhage

Comments:

Through usage, the term intracerebral is taken in this context to include intracerebellar.

Headache is more frequent and more severe in haemorrhagic than in ischaemic stroke. It is usually overshadowed by focal deficits or coma, but it can be the prominent early feature of cerebellar haemorrhage which may require emergency surgical decompression.

6.2.1 Headache attributed to intracerebral haemorrhage is more often due to associated subarachnoid blood and to local compression than to intracranial hypertension. It can occasionally present as thunderclap headache.

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IHS vs. ICD-10

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