I think I have orthostatic hypotension but I am not sure. When I stand up I get the normal dizziness but my vision also fades to black for a few seconds. Sometimes I get tunnel vision. I am a runner so I thought it could be having a runner s pulse, but no one on my team experiences vision loss or as much dizziness. I am not dehidrated either. Is there anything I can do to stop this? Or do I need to see a doctor?
Hello, I passed carefully through your question and would explain that your symptoms could be related to orthostatic hypotension.  For this reason, I would recommend consulting with your attending physician for a physical exam and performing a Head-Up Tilt test in order to investigate for this possible disorder.  Some blood lab tests are necessary too: complete blood count for anemia, thyroid hormone levels for thyroid gland dysfunction, blood electrolytes for possible imbalance.  Hope I have answered your query. Let me know if I can assist you further.  