Tracyloo32

Im posting this on behalf of my grandmother to see if anyone has any suggestions as to whats going on. First ill tell you she is 75, does well, is very active. Past medical hx is high bp & cholesterol, and several tga ( transient global amnesia) episodes.. Last week she fell On the side walk, no injuries, other than her face being bruised.. But she didnt no what caused her to fall but felt faint after. Yesterday while grocery shopping she had a pain in her left arm.. She described it as an injection like feeling, followed by her arm gettunh numb for a few moments.. She made it home and i checked her b/p it was 210/110, and she had the pain again. Took her to the er. Dr brought bp down, ran a ton of tests found nothing.. Prescribed her clonodine and sent her home.. When she got home she had the same pain followed by numbness in her arm and hip. TOday she experienced the same pain a few times, and felt "spacey" as she decribed, but the b/p was 130/70..and Everytime she would stand she would get a pounding headache and very lightheaded for a few moments. took her back to ed.. Found nothing.. I suggested orthostatic hypotension..test was done and b/p were not very different in different positions but standing showed a slightly lower reading. 134/71 sitting, 136/78 supine, 126/ 68 standing. They admitted her for observation, abd to make sure ot wasnt the starts of a stroke.. but the basically had no answers or diagnoses.. Just wondering if it could be orthostatic hypotension?? Thinking it could have been what causef the fall also. And would the clonodine be helpful or make it worse?