What are the symptoms before cerebral thrombosis?

Generally speaking, before the onset of cerebral thrombosis, its symptoms mainly include frequent transient ischemic attacks, such as hemiplegia many times a day, but after a while the patient's symptoms are obviously relieved, or suddenly show speech fluency, stuttering, after a while, symptoms can also be relieved. This suggests that it is possible that cerebral thrombosis should show, generally speaking, like cerebral thrombosis, most of its causes are caused by hardening of arteries, resulting in blockage of blood vessels after showing stenosis, of course, including atrial fibrillation in the past, embolus falling off or other causes.