Carotid artery disease: Generally no symptoms till getting a stroke or transient ischemic attack (TIA or mini-stroke). Symptoms of such contain difficulty with vision or speech, confusion and problem with memory. Vascular diseases from the lungs. These could cause granulomatosis with polyangiitis. This is certainly an uncommon disease where the blood https://www.sgvascularctr.com/introduction-to-vascular-diseases/