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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 8. HEADACHE ATTRIBUTED TO A SUBSTANCE OR ITS WITHDRAWAL 8.1. Headache induced by acute substance use or exposure  8.1.1. Nitric oxide (NO) donor-induced headache [X44]8.1.1.1. Immediate NO donor-induced headache [X44] 8.1.1.2. Delayed NO donor-induced headache [X44] 8.1.2. Phosphodiesterase (PDE) inhibitor-induced headache [X44] 8.1.3. Carbon monoxide-induced headache [X47] 8.1.4. Alcohol-induced headache [F10]8.1.4.1. Immediate alcohol-induced headache [F10] 8.1.4.2. Delayed alcohol-induced headache [F10] 8.1.5. Headache induced by food components and additives 8.1.5.1. Monosodium glutamate-induced headache [X44] 8.1.6. Cocaine-induced headache [F14] 8.1.7. Cannabis-induced headache [F12] 8.1.8. Histamine-induced headache [X44] 8.1.8.1. Immediate histamine-induced headache [X44] 8.1.8.2. Delayed histamine-induced headache [X44] 8.1.9. Calcitonin gene-related peptide (CGRP)-induced headache [X44] 8.1.9.1. Immediate CGRP-induced headache [X44] 8.1.9.2. Delayed CGRP-induced headache  [X44] 8.1.10. Headache as an acute adverse event attributed to medication used for other indications [code to specify substance] 8.1.11. Headache attributed to other acute substance use or exposure [code to specify substance] 8.2. Medication-overuse headache (MOH) 8.3. Headache as an adverse event attributed to chronic medication [code to specify substance] 8.4. Headache attributed to substance withdrawal Bibliography9. 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
8.1.11	Headache attributed to other acute substance use or exposure [code to specify substance]	G44.4 or G44.83

Diagnostic criteria:

Headache fulfilling criteria C and D
Acute use of or other acute exposure to a substance other than those described above
Headache develops within 12 hours of use or exposure
Headache resolves within 72 hours after single use or exposure

Comments:

Headache has been reported after exposure to a number of organic and inorganic substances. The following are the most commonly incriminated substances:

Inorganic compounds: arsenic, borate, bromate, chlorate, copper, iodine, lead, lithium, mercury, tolazoline hydrochloride.
Organic compounds: alcohols (long-chain), aniline, balsam, camphor, carbon disulfide, carbon tetrachloride, clordecone, EDTA, heptachlor, hydrogen sulfide, kerosene, methyl alcohol, methyl bromide, methyl chloride, methyl iodine, naphthalene, organophosphorous compounds (parathion, pyrethrum).

The headache characteristics are not very well defined in the literature but most are dull, diffuse, continuous and moderate to severe.

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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.

IHS Subcommittee

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

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