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  2. Orthostatic intolerance - Wikipedia

    en.wikipedia.org/wiki/Orthostatic_intolerance

    Orthostatic intolerance (OI) is the development of symptoms when standing upright that are relieved when reclining. [1] There are many types of orthostatic intolerance. OI can be a subcategory of dysautonomia, a disorder of the autonomic nervous system [2] occurring when an individual stands up. [3]

  3. 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 ...

  4. Motion sickness - Wikipedia

    en.wikipedia.org/wiki/Motion_sickness

    While the interior of the centrifuge does not appear to move, one will experience a sense of motion. [ dubious – discuss ] In addition, centrifugal force can cause the vestibular system to give one the sense that downward is in the direction away from the center of the centrifuge rather than the true downward direction.

  5. Orthostatic hypotension - Wikipedia

    en.wikipedia.org/wiki/Orthostatic_hypotension

    Orthostatic hypotension, also known as postural hypotension, [2] is a medical condition wherein a person's blood pressure drops when they are standing up (orthostasis) or sitting down. Primary orthostatic hypotension is also often referred to as neurogenic orthostatic hypotension. [ 3 ]

  6. Vomiting - Wikipedia

    en.wikipedia.org/wiki/Vomiting

    Vomiting (also known as emesis, puking and throwing up) [a] is the involuntary, forceful expulsion of the contents of one's stomach through the mouth and sometimes the nose. [ 1 ]

  7. Nausea - Wikipedia

    en.wikipedia.org/wiki/Nausea

    Nausea and or vomiting is the main complaint in 1.6% of visits to family physicians in Australia. [6] However, only 25% of people with nausea visit their family physician. [1] In Australia, nausea, as opposed to vomiting, occurs most frequently in persons aged 15–24 years, and is less common in other age groups. [6]

  8. Crossword abbreviations - Wikipedia

    en.wikipedia.org/wiki/Crossword_abbreviations

    Cryptic crosswords often use abbreviations to clue individual letters or short fragments of the overall solution. These include: Any conventional abbreviations found in a standard dictionary, such as: "current": AC (for "alternating current"); less commonly, DC (for "direct current"); or even I (the symbol used in physics and electronics)

  9. Vertigo - Wikipedia

    en.wikipedia.org/wiki/Vertigo

    Vertigo is a sensation of spinning while stationary. [22] It is commonly associated with nausea or vomiting, [21] unsteadiness (postural instability), [19] falls, [23] changes to a person's thoughts, and difficulties in walking. [24] Recurrent episodes in those with vertigo are common and frequently impair the quality of life. [10]