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  2. 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 ...

  3. Katie Ledecky Just Revealed a Secret Health Struggle After ...

    www.aol.com/katie-ledecky-just-revealed-secret...

    What disease does Katie Ledecky have? Katie has POTS, which is is a disorder where a reduced volume of blood returns to the heart after you stand up from lying down, per the National Institute of ...

  4. Approximately 30% of those with CPVT will have a family member who has experienced blackouts, seizures, or sudden death in response to exercise or stress. [7] In those with CPVT, catecholamine release can lead to an abnormal heart rhythm or arrhythmia known as ventricular tachycardia. [4]

  5. Adrenergic storm - Wikipedia

    en.wikipedia.org/wiki/Adrenergic_storm

    Serotonin, being a tryptamine (non-catecholamine) involved in higher brain functions, can cause dangerous hypertension and tachycardia from its effects on the sympathetic nervous system. [23] Symptoms caused by excessive adrenergic signalling can occur alongside those of serotonergic signalling.

  6. What Are Catecholamines, and What Do They Do?

    www.aol.com/lifestyle/catecholamines-181010080.html

    Examples Are Dopamine and Adrenaline. For premium support please call: 800-290-4726 more ways to reach us

  7. Katie Ledecky opens up about POTS diagnosis and how she ...

    www.aol.com/news/katie-ledecky-opens-pots...

    Postural orthostatic tachycardia syndrome (POTS) is a disorder of the autonomic nervous system, which controls body functions we often don’t think about, such as heart rate and blood pressure.

  8. Catecholamine - Wikipedia

    en.wikipedia.org/wiki/Catecholamine

    Two catecholamines, norepinephrine and dopamine, act as neuromodulators in the central nervous system and as hormones in the blood circulation. The catecholamine norepinephrine is a neuromodulator of the peripheral sympathetic nervous system but is also present in the blood (mostly through "spillover" from the synapses of the sympathetic system).

  9. Monoaminergic activity enhancer - Wikipedia

    en.wikipedia.org/wiki/Monoaminergic_activity...

    A few endogenous MAEs have been identified, including the trace amines β-phenylethylamine (PEA), tyramine, and tryptamine. [1] [11] At a concentration of 16 μM (1.6 × 10-5 M), β-phenylethylamine has been shown to act as a MAE for norepinephrine (2.6-fold increase), dopamine (1.3-fold increase), and serotonin (2.3-fold increase) in the rat brainstem in vitro.