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. 2020 Oct;61(5):422–428. doi: 10.3325/cmj.2020.61.422

Table 5.

Alternative diagnosis in patients with suspected postural orthostatic tachycardia syndrome

Diagnosis N = 116
Multiple sclerosis
22
Anxious disorder
17
Epilepsy
16
Deconditioning
13
Anemia
11
Orthostatic hypotension
10
Heart rate increase <30/min
10
Syncope
9
Hyperthyreosis
3
Polyneuropathy
2
Supraventricular tachycardia
2
Enterovirosis 1