Abstract
Postural tachycardia syndrome refers to the development of symptoms such as light-headedness, visual blurring, palpitations and weakness on assuming an upright posture; these symptoms are relieved by resuming a supine posture. This syndrome is occasionally associated with idiopathic hypovolemia, impaired vasomotor tone, deconditioning and autonomic neuropathy, but has not been reported in association with chronic fatigue syndrome (CFS). We describe five patients who satisfied the CFS criteria of the Centres for Disease Control and Prevention. Upright tilt-table testing induced significant hypotension and increased heart rate in all five patients, consistent with clinical and auronomic manifestation of postural tachycardia syndrome.
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De Lorenzo, F., Hargreaves, J. & Kakkar, V.V. Possible relationship between chronic fatigue and postural tachycardia syndromes. Clinical Autonomic Research 6, 263–264 (1996). https://doi.org/10.1007/BF02556297
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DOI: https://doi.org/10.1007/BF02556297