For your doctor
NDPH is rare enough that many GPs will not have met it. Print this page and give it to the clinician you are seeing: the diagnostic criteria, what needs ruling out first, and how treatment is usually chosen — with the references to check.
One page, portrait, A4 or US Letter. Written by Seth Mundall, MD; checked against the sources listed at the bottom.
ICHD-3 code 4.10 · ICD-10-CM G44.52 · Prepared by Seth Mundall, MD, for ndph.org · Reviewed October 2026
No particular phenotype is required: the pain may have migraine-like or tension-type-like features.
| Clinical clue | Consider |
|---|---|
| Worse upright, eased lying flat | Spontaneous intracranial hypotension (CSF leak) |
| Worse lying down, on waking or with Valsalva; papilloedema; pulsatile tinnitus; visual obscurations | Raised intracranial pressure (idiopathic intracranial hypertension, venous sinus thrombosis, mass) |
| Thunderclap onset | Subarachnoid haemorrhage, RCVS, cervical artery dissection, venous sinus thrombosis |
| Age over 50; jaw claudication; scalp tenderness | Giant cell arteritis (ESR/CRP) |
| Fever, weight loss, cancer or immunosuppression | Infection, malignancy |
| Pregnancy or post-partum | Venous sinus thrombosis, pre-eclampsia |
| Onset after head or neck injury | Persistent post-traumatic headache |
| Acute medication on many days | Medication-overuse headache — establish which came first |
| Strictly one-sided with ipsilateral autonomic features | Hemicrania continua (indomethacin response) |
| Gradual build-up from episodic attacks | Chronic migraine or chronic tension-type headache |
Diagnosis is clinical; investigation is directed at excluding the causes above and usually includes brain imaging.40
1. Headache Classification Committee of the IHS. ICHD-3. Cephalalgia 2018;38:1-211.
2. Grande RB et al. Cephalalgia 2009;29:1149-55.
3. Castillo J et al. Headache 1999;39:190-6.
4. Rozen TD. Headache 2016;56:164-73.
7. Cheema S et al. NDPH: a systematic review and meta-analysis. Cephalalgia 2023;43:3331024231168089.
31. Diener HC et al. Medication overuse headache. Lancet Neurol 2019;18:891-902.
35. Abuhalaweh N et al. Treatment outcomes in NDPH in children and adolescents. Cephalalgia 2026;46:3331024261426562.
40. Yamani N, Olesen J. NDPH: a systematic review. J Headache Pain 2019;20:80.
Numbers in the text link to these sources. Where the evidence comes from migraine rather than NDPH, the text says so.