In its early stages, carotid artery disease often doesn't produce any signs or symptoms. The condition may go unnoticed until it's serious enough to deprive your brain of blood, causing a stroke or TIA. Signs and symptoms of a stroke or TIA include:  Sudden numbness or weakness in the face or limbs, often on only one side of the body Sudden trouble speaking and understanding Sudden trouble seeing in one or both eyes Sudden dizziness or loss of balance Sudden, severe headache with no known cause 
early stages  carotid artery disease doesn't produce signs symptoms  condition may unnoticed it's deprive brain blood  causing stroke tia  signs symptoms stroke tia include:  sudden numbness weakness face limbs  only side body sudden trouble speaking understanding sudden trouble seeing eyes sudden dizziness loss balance sudden  severe headache known cause 
carotid artery disease