Carothers, Becky, Schmidt, Lori, Puri, Vinay · The Journal of the Kentucky Medical Association · 2003
POTS is a condition where your heart rate increases too much when you stand up, and less blood flows to your brain, causing dizziness and fainting. This paper describes two patients with POTS who needed different levels of treatment—one managed at home and one needing hospital care. The authors point out that POTS is probably more common than doctors realize and is sometimes mistaken for chronic fatigue syndrome or other conditions.
This study is important because it highlights that POTS is frequently confused with ME/CFS, which can lead to missed diagnoses and inappropriate treatment. Many ME/CFS patients experience orthostatic symptoms similar to POTS, so distinguishing between these conditions is critical for selecting the right treatment approach. Clarifying the diagnostic differences helps ensure patients receive targeted therapies rather than being labeled with a fatigue diagnosis when they may have treatable orthostatic dysfunction.
This case report does not establish how often POTS occurs in ME/CFS patients or whether the conditions ever co-occur. It does not prove causation or define whether POTS is a distinct condition or a symptom that can appear in multiple disorders. The small sample size (n=2) cannot demonstrate prevalence rates, population characteristics, or optimal treatment protocols across diverse patient populations.
About the PEM badge: “PEM required” means post-exertional malaise was an explicit required diagnostic criterion for participant inclusion in this study — not that PEM was studied, observed, or discussed. Studies using criteria that do not require PEM (e.g. Fukuda, Oxford) are tagged “PEM not required”. How the atlas works →
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