Table 1.

Common postural tachycardia syndrome symptoms

Patients experiencing symptoms, %Orthostatic intolerance symptomsaSymptoms not necessarily associated with posture
>90

  • Light-headedness, presyncope

  • Palpitations (heart racing)

  • Cognitive impairment (brain fog)

  • Frequent nausea

  • Headache

  • Fatigue

>80

  • Breathlessness

  • Abdominal pain

  • Muscle pain/weakness

  • Cold feet/hands

>70

  • Atypical chest pain

  • Tremulousness

  • Blurred vision

  • Bloating/constipation

  • Hand tingling

Other common symptoms

  • Syncope (36%)

  • Sweating

  • Diarrhoea (69%)

  • Poor sleep

  • Exercise intolerance

  • ↵a Symptoms that develop when upright and are relieved by reclining.