- New Daily Persistent HeadachePersistent headache, daily from its onset which is clearly remembered. The pain lacks characteristic features, and may be migraine-like or tension-type-like, or have elements of both.
- Tension-Type HeadacheFrequent episodes of headache, typically bilateral, pressing or tightening in quality and of mild to moderate intensity, lasting minutes to days. The pain does not worsen with routine physical activity and is not associated with nausea, but photophobia or phonophobia may be present.
- Primary Stabbing HeadacheTransient and localized stabs of pain in the head that occur spontaneously in the absence of organic disease of underlying structures or of the cranial nerves.
- Primary Thunderclap HeadacheHigh-intensity headache of abrupt onset, mimicking that of ruptured cerebral aneurysm, in the absence of any intracranial pathology.
- Nummular HeadachePain of highly variable duration, but often chronic, in a small circumscribed area of the scalp in the absence of any underlying structural lesion.
- Hypnic HeadacheFrequently-recurring headache attacks developing only during sleep, causing wakening and lasting for up to four hours, without characteristic associated symptoms and not attributed to other pathology.