I have had 2 incidents in he past week when I felt like I might faint and had brief moments when I felt like everything was going black. Once I was walking, the second time standing, Neither time lasted more than a few seconds. What might causes be and should I be calling my Dr to be seen?
Welcome to Chat Doctor! Your symptom can be due to low blood pressure, but it should be tested properly. Had I been treating you, I would have liked to get your blood pressure, hemoglobin, thyroid levels done. If they are ok - but still symptoms persist, then an ECG / ECHO may be required to rule out cardiac cause. More regarding treatment can be said only after test, so visit your doctor. Wish you good health! 