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13. CRANIAL NEURALGIAS AND CENTRAL CAUSES OF FACIAL PAIN 13.1. Trigeminal neuralgia 13.2. Glossopharyngeal neuralgia 13.3. Nervus intermedius neuralgia [G51.80] 13.4. Superior laryngeal neuralgia [G52.20] 13.5. Nasociliary neuralgia [G52.80] 13.6. Supraorbital neuralgia [G52.80] 13.7. Other terminal branch neuralgias [G52.80] 13.8. Occipital neuralgia [G52.80] 13.9. Neck-tongue syndrome 13.10. External compression headache 13.11. Cold-stimulus headache 13.12. Constant pain caused by compression, irritation or distortion of cranial nerves or upper cervical roots by structural lesions [G53.8] + [code to specify aetiology] 13.13. Optic neuritis [H46]  13.14. Ocular diabetic neuropathy [E10-E14]  13.15. Head or facial pain attributed to herpes zoster 13.15.1. Head or facial pain attributed to acute herpes zoster [B02.2]  13.15.2. Post-herpetic neuralgia [B02.2] 13.16. Tolosa-Hunt syndrome 13.17. Ophthalmoplegic “migraine” 13.18. Central causes of facial pain 13.19. Other cranial neuralgia or other centrally-mediated facial pain [code to specify aetiology] Bibliography and reference14. OTHER HEADACHE, CRANIAL NEURALGIA, CENTRAL OR PRIMARY FACIAL PAIN 

IHS	Diagnosis	ICD-10
13.15.1	Head or facial pain attributed to acute herpes zoster [B02.2]	G44.881

Description:

Head or facial pain caused by herpes zoster.

Diagnostic criteria:

Head or facial pain in the distribution of a nerve or nerve division and fulfilling criteria C and D
Herpetic eruption in the territory of the same nerve
Pain precedes herpetic eruption by <7 days¹
Pain resolves within 3 months

Note:

Pain precedes herpetic eruption by <7 days. During this time, criterion B is not fulfilled and the diagnosis is Head or facial pain probably attributed to acute herpes zoster.

Comments:

Herpes zoster affects the trigeminal ganglion in 10-15% of patients with the disease, and the ophthalmic division is singled out in some 80% of those patients. Herpes zoster may also involve the geniculate ganglion, causing an eruption in the external auditory meatus. The soft palate or areas of distribution of upper cervical roots may be involved in some patients.

Ophthalmic herpes may be associated with third, fourth and/or sixth cranial nerve palsies and geniculate herpes with facial palsy and/or acoustic symptoms. Zoster occurs in about 10% of patients with lymphoma and 25% of patients with Hodgkin's disease.

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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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