Within the past weeks, I have times during the day of fatigue, weakness, dizziness, no energy, which clears up and returns without any noticeable reason. Recently I have had a fainting spell which brought me to the ER. Extensive tests did not reveal the cause.. virus? something I ate. No similar problems since. CT scans did not reveal cause.. head chest abdomen.. no obvious condition. I did not have a carotid artery test. Could that remain as a problem area? I do regularly see a DR. Have a urologist appointment next week. Should I pursue my question re carotid condition?