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  2. Lazarus sign - Wikipedia

    en.wikipedia.org/wiki/Lazarus_sign

    Like the knee jerk reflex, the Lazarus sign is an example of a reflex mediated by a reflex arc—a neural pathway which passes via the spinal column but not through the brain. As a consequence, the movement is possible in brain-dead patients whose organs have been kept functioning by life-support machines , precluding the use of complex ...

  3. Reflex syncope - Wikipedia

    en.wikipedia.org/wiki/Reflex_syncope

    Episodes of vasovagal syncope are typically recurrent and usually occur when the predisposed person is exposed to a specific trigger. Before losing consciousness, the individual frequently experiences early signs or symptoms such as lightheadedness, nausea, the feeling of being extremely hot or cold (accompanied by sweating), ringing in the ears, an uncomfortable feeling in the heart, fuzzy ...

  4. Sudden arrhythmic death syndrome - Wikipedia

    en.wikipedia.org/wiki/Sudden_arrhythmic_death...

    Sudden arrhythmic death syndrome (SADS) is a sudden unexpected death of adolescents and adults caused by a cardiac arrest. However, the exact cause of the cardiac ...

  5. Neurogenic shock - Wikipedia

    en.wikipedia.org/wiki/Neurogenic_shock

    - dizziness - anxiety - history of trauma to head or upper spine. - if the injury is to the head or neck, hoarseness or difficulty swallowing may occur. Symptoms of neurogenic shock are differentiated from other forms of shock by the lack of signs of the compensatory mechanisms triggered by the SNS

  6. Postural orthostatic tachycardia syndrome - Wikipedia

    en.wikipedia.org/wiki/Postural_orthostatic...

    Postural orthostatic tachycardia syndrome (POTS) is a condition characterized by an abnormally large increase in heart rate upon sitting up or standing. [1] POTS is a disorder of the autonomic nervous system that can lead to a variety of symptoms, [10] including lightheadedness, brain fog, blurred vision, weakness, fatigue, headaches, heart palpitations, exercise intolerance, nausea ...

  7. Why Feeling Really Dizzy Could Be a Sign of COVID-19 ... - AOL

    www.aol.com/why-feeling-really-dizzy-could...

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  8. Feeling dizzy and nauseated after an earthquake? Here's why.

    www.aol.com/lifestyle/people-reporting-vertigo...

    In fact, one study published in 2021 went so far as to call similar symptoms “post-earthquake dizziness syndrome.” More than 42% of the 3,656 people that Japanese researchers surveyed in the ...

  9. 10 weird things that can kill you almost instantly - AOL

    www.aol.com/news/2016-03-13-10-weird-things-that...

    The spice, in larger quantities, has a hallucinogenic effect, and when consumed in excess can cause psychosis and death. Number 5.Underestimating a cow. 22 a year. That is how many annual U.S ...