Hi everyone,
I'm a 25-year-old woman. I have hypermobility syndrome/hypermobility spectrum disorder and was evaluated by an EDS/HSD clinic in my city. I have a lot of issues with lightheadedness and palpitations when standing up and especially if I've been bending down and stand up, or even with mild exercise, such as climbing a few stairs. I've had an echo (normal) and a holter (no arrhythmia). During the appointment at the EDS clinic, they did a "poor man's tilt table test" (got me to lie down and stand up) and said that while I definitely have orthostatic intolerance, and my heart rate goes up, I don't quite have the 30 bpm increase associated with POTS. I don't have orthostatic hypotension either, my blood pressure runs kind of low in general but does not drop significantly when I stand up.
My biggest issue is intense tachycardia (sometimes up to 160 BPM) with mild exercise like climbing stairs or walking up a hill. I can't possibly be that out of shape - I walk a ton.
Does anyone else have orthostatic intolerance without technically having POTS? Is this another form of dysautonomia?