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Postural Orthostatic Tachycardia Syndrome (POTS) as a Cause of Dizziness - Expanding the Etiological Spectrum
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Postural Orthostatic Tachycardia Syndrome (POTS) as a Cause of Dizziness - Expanding the Etiological Spectrum
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Journal Article
Postural Orthostatic Tachycardia Syndrome (POTS) as a Cause of Dizziness - Expanding the Etiological Spectrum
2024
Overview
Background and Objectives:
Dizziness is a frequent complaint encountered in neurology clinics. Dizziness can be spontaneous or triggered, which includes orthostatic dizziness. Orthostatic dizziness can be acute (reflex/vasovagal syncope), chronic (orthostatic hypotension (OH), or postural orthostatic tachycardia syndrome (POTS). Since dizziness has numerous causes, these patients undergo extensive investigations before a diagnosis is made. Here, we describe five patients who presented with dizziness and were diagnosed to have POTS on evaluation.
Materials and Methods:
We conducted a retrospective study of patients who presented to the Department of Neurology from August 2020 to November 2021 with the complaint of dizziness and were diagnosed with POTS. The clinical history, neurological examination, treatment response, routine blood investigations, magnetic resonance imaging (MRI) brain, and autonomic function tests (AFTs) of the patients were reviewed from patients' clinical records. Patients with dizziness and with diagnosis other than POTS were excluded from the study.
Results:
Among the five patients, males were predominant with a male to female ratio of 3:2. All the patients were in their early fourth decade with a mean age of 35.4 years. The presenting symptom was dizziness, and the key associated symptoms were anxiety and headache. Due to the orthostatic nature of symptoms and absence of orthostatic fall in blood pressure (BP), a detailed AFT was carried out, leading to the diagnosis of POTS. Patients were assessed at 3-6 months after treatment and there was a moderate response in one and no response in the remaining four patients.
Conclusion:
POTS should be considered a possible etiology when patients present with orthostatic dizziness in the absence of orthostatic fall in BP. Anxiety and headache may be associated with this type of dizziness.
Publisher
Wolters Kluwer - Medknow,Medknow Publications and Media Pvt. Ltd,Medknow Publications & Media Pvt. Ltd
