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  2. Hypnic headache - Wikipedia

    en.wikipedia.org/wiki/Hypnic_headache

    For diagnosis of hypnic headache syndrome, headaches should occur at least 15 times per month for at least one month. Included in the differential diagnosis of a new onset nighttime headaches in the elderly is drug withdrawal, temporal arteritis, Sleep apnea, oxygen desaturation, pheochromocytoma, intracranial causes, primary and secondary neoplasms, communicating hydrocephalus, subdural ...

  3. Exploding head syndrome - Wikipedia

    en.wikipedia.org/wiki/Exploding_head_syndrome

    Pain is typically absent. [2] The cause is unknown. [3] Potential organic explanations that have been investigated but ruled out include ear problems, temporal lobe seizure, nerve dysfunction, or specific genetic changes. [2] Potential risk factors include psychological stress. [2] It is classified as a sleep disorder or headache disorder.

  4. Thunderclap headache - Wikipedia

    en.wikipedia.org/wiki/Thunderclap_headache

    A thunderclap headache is a headache that is severe and has a sudden onset. It is defined as a severe headache that takes seconds to minutes to reach maximum intensity. [1] [2] Although approximately 75% are attributed to "primary" headachesheadache disorder, non-specific headache, idiopathic thunderclap headache, or uncertain headache disorder—the remainder are secondary to other causes ...

  5. Neurologists reveal 15 subtle migraine symptoms — that aren't ...

    www.aol.com/neurologists-reveal-15-subtle...

    But a headache is just one part. There are other subtle warning symptoms to watch out for, neurologists say. A migraine attack can be a debilitating condition. But a headache is just one part.

  6. 4 Telltale Signs Your Headache is Actually a Migraine - AOL

    www.aol.com/lifestyle/4-telltale-signs-headache...

    Experts share symptoms that precede a migraine and a checklist of what they feel like to help readers determine if their headaches are migraines. 4 Telltale Signs Your Headache is Actually a ...

  7. Headache - Wikipedia

    en.wikipedia.org/wiki/Headache

    Primary headaches are benign, recurrent headaches not caused by underlying disease or structural problems. For example, migraine is a type of primary headache. While primary headaches may cause significant daily pain and disability, they are not dangerous from a physiological point of view.

  8. Why astigmatism causes blurry vision, especially at night - AOL

    www.aol.com/news/why-astigmatism-causes-blurry...

    Astigmatism, a disorder that affects how the eyes focus light, can be exacerbated at night. Blurry vision and headaches are symptoms of astigmatism. Astigmatism, a disorder that affects how the ...

  9. Hemicrania continua - Wikipedia

    en.wikipedia.org/wiki/Hemicrania_continua

    In hemicrania continua, basal pain is a dull aching pressure similar to that of TTHs (Tension-Type Headaches) that occurs nearly always on the same side of the head and face. Pain ranges from mild to severe and is characterized by fluctuations that increase in intensity up to three to five times per 24-hour cycle.

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