As others have complained with dizziness, I also have it. On a scale of 1-10 , I'd rate mine a 9. Almost blacking out but not quite. After going to doctors and many tests, no one could tell me why. Until my cardiologist suggested that I may be taking too much medicine. I'm diabetic and have high blood pressure. He also found that whenever I stand up (and not suddenly) just normal and stay up for several minutes---just going to the store and grocery shopping for example.,My blood pressure will drop 30-40 points , so I was sent for a MRI of the head to see if there was anything wrong with it. Well, the MRI showed that at some point I have had a Right Basal Ganglia Lacunar infarct. My question is: What is this infarct, where is it located, and what in the brain does it effect? Since it apparently did not affect me, is there anything to worry about.