Orthostatic intolerance.
Not much more to say.
An entire quarter of their convenience sample of elderly (mostly female) volunteers had a 60 point drop in their blood pressure upon standing, with only a modicum of recovery within 2 minutes.
Antihypertensive polypharmacy was weakly associated with orthostatic intolerance, and the presence of orthostatic intolerance was weakly associated with an increased number of falls.
So, if the disease (hypertension) doesn’t harm you, the treatment will.