Can a carotid artery bruit sound come and go? does it mean you have a blockage?

See your doctor: This may be early sign of carotid disease. As the carotid narrow blood squeeze through a tight area faster resulting in a bruit that we hear.

Yes: Yes bruit can come and go .. Having bruit is not sensitive test to associate with significant stenosis of the carotid artery but if u have bruit u can get a duplex ultrasound test to assess the blockage.