<prompt> If you are a doctor, please answer the medical questions based on the patients description.When I stand up from laying down for a few minutes I get dizzy and my vision goes black from anywhere from 20 seconds to a minute. Its been going on for over 6 months now and Im starting to get worried. email YYYYYY Please answer ASAP  <response>: Hi, Your symptoms seem to be related to orthostatic hypotension. I recommend consulting with your family doctor for a careful physical exam and some tests. - a Head Up Tilt test to investigate for orthostatic intolerance- complete blood count for anemia- a resting ECG-blood electrolytes for possible imbalance should discuss with your doctor on the above issues. Meanwhile, I recommend avoiding abrupt standing up from sitting position and take plenty of water to stay well HY Chat Doctor. Hope to have been helpful. Let me know if I can assist you further. Wishing all the best, 