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  2. Does a glass of water ever go bad? Experts weigh in. - AOL

    www.aol.com/lifestyle/does-glass-water-ever-bad...

    Why does water taste different after it’s been sitting out for 24 hours? ... unpleasant taste of water that’s been sitting out overnight. Over time, chlorine that has been added to tap water ...

  3. Retinal migraine - Wikipedia

    en.wikipedia.org/wiki/Retinal_migraine

    Retinal migraine is a retinal disease often accompanied by migraine headache and typically affects only one eye. It is caused by ischaemia or vascular spasm in or behind the affected eye. The terms "retinal migraine" and "ocular migraine" are often confused with " visual migraine ", which is a far-more-common symptom of vision loss, resulting ...

  4. Visual snow syndrome - Wikipedia

    en.wikipedia.org/wiki/Visual_snow_syndrome

    Migraine and migraine with aura are common comorbidities. However, comorbid migraine worsens some of the additional visual symptoms and tinnitus seen in "visual snow" syndrome. This might bias research studies by patients with migraine being more likely to offer study participation than those without migraine due to having more severe symptoms.

  5. Headache - Wikipedia

    en.wikipedia.org/wiki/Headache

    Possible causes The reason why a red flag indicates possible causes Diagnostic tests New headache after age 50: Temporal arteritis, mass in brain: Temporal arteritis is an inflammation of vessels close to the temples in older people, which decreases blood flow to the brain and causes pain. May also have tenderness in temples or jaw claudication.

  6. The most common causes of ocular migraines and how to ... - AOL

    www.aol.com/news/most-common-causes-ocular...

    Ocular migraine causes and triggers include reading small text, harsh lights, being tired, or not drinking enough water. Genetics is also a major cause of ocular migraines, as they tend to run in ...

  7. Is It Bad to Drink Water That’s Been Sitting ... - AOL

    www.aol.com/bad-drink-water-sitting-overnight...

    “If it’s allowed to incubate for hours, that could potentially contaminate the water, and make you ill by reintroducing that bacteria,” says Marc Leavey, MD, primary care specialist at Mercy ...

  8. Photopsia - Wikipedia

    en.wikipedia.org/wiki/Photopsia

    Causes: Peripheral (Posterior) vitreous detachment, retinal detachment, age-related macular degeneration, ocular (retinal) migraine / migraine aura, vertebrobasilar insufficiency, optic neuritis, occipital lobe infarction (similar to occipital stroke), sensory deprivation (ophthalmopathic hallucinations) Risk factors

  9. Aura (symptom) - Wikipedia

    en.wikipedia.org/wiki/Aura_(symptom)

    However, the migraine aura can manifest itself in isolation, that is, without being followed by headache. The aura can stay for the duration of the migraine; depending on the type of aura, it can leave the person disoriented and confused. It is common for people with migraines to experience more than one type of aura during the migraine.