Disease or Syndrome
hypnic headache
Definitions related to hypnic headache:
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A headache disorder that occurs exclusively at night, waking the affected individual from sleep.Human Phenotype Ontology (HPO)The Human Phenotype Ontology Project, 2021
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A primary headache disorder which occurs exclusively during sleep and regularly awakes patients at a consistent time of night.NLM Medical Subject HeadingsU.S. National Library of Medicine, 2021
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A rare headache characterized by recurrent brief, intense headache attacks occurring exclusively during sleep, typically at the same time of the night, causing the patient to wake up. The pain usually lasts more than 15 minutes after waking. It is mostly bilateral and may be associated with nausea, photophobia, or phonophobia, while characteristically no autonomic symptoms are present.OrphaNetINSERM, 2021
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