In fact, the symptoms of stroke are many and complex, and the aura of stroke is also complex and diverse, because patients do not know that the symptoms they have are the aura of stroke, so they miss the best time for treatment and have a stroke. I combine my years of clinical experience in brain disease to introduce some stroke aura that has been overlooked. 1. Transient bilateral or unilateral blindness When there is a lesion in the posterior circulation of the brain, it will affect the vision, so there is a transient black haze in both eyes (nothing can be seen), usually lasting a few seconds to a few minutes, and repeated more times, and in severe cases the blood vessels will be completely blocked, resulting in a stroke. This condition occurs more often in the elderly because the hemiparesis is mild and often not taken seriously by the patient and family, but it has a greater potential to be life-threatening. After the internal carotid artery enters the cranial cavity, the first artery that branches off is the ophthalmic artery. When the internal carotid artery is occluded or incompletely occluded, the blood supply to the ophthalmic artery is first interrupted, resulting in blindness in the unilateral eye of the lesion. However, as the blood supply to the internal carotid artery improves, the blood supply to the ophthalmic artery is restored and the patient regains his or her sight. When the condition worsens, the internal carotid artery is completely occluded, the ophthalmic artery is occluded, and the patient develops partial blindness on one side and complete paralysis of one limb, causing permanent stroke disability to the patient. For example, patient Liu, male, 49 years old, had 3 occurrences of left eye blindness within 6 months due to work pressure. The first occurrence of blindness for 10 minutes did not attract attention, and the second occurrence of blindness for 30 minutes, after which he went to the ophthalmology department and no problem was found, so he continued to work intensively. The third time, hemiplegia occurred one hour after the blindness, and he could not speak. Despite half a year of hospitalization, he was still left with the disability that one side of the limb was paralyzed with unfavorable language, and from then on, he lost the ability to work and could not go to work. 2, vertigo Vertigo symptoms generally belong to the insufficiency of the posterior circulation of the brain caused by the elderly often dizziness, some people do not care. In fact, dizziness is also a precursor of stroke, only that dizziness is repeated more often and does not easily form a stroke, but if it is repeated more often and the vertigo time is prolonged, the chance of forming a stroke will increase. Once a stroke is formed, it is often more serious, because it is a lesion in the brainstem area, and the patient can become comatose or even life-threatening. For example, patient Wang Moumou, female, 65 years old, had 2 blackouts in front of her eyes and almost fainted when going to the toilet and mopping the floor, and usually had frequent vertigo with tinnitus, sought my consultation and considered posterior circulation ischemia, made MRI angiography and found bilateral vertebral artery and basilar artery stenosis, which led to brainstem and cerebellar and occipital lobe ischemia, so the correct treatment was given, and the patient’s vertigo symptoms disappeared quickly. Some people may have a symptom that one day they suddenly find that their left or right hand is not their own, or one hand is missing, which in the opinion of neurologists belongs to “body image disorder” and is caused by frontal lobe lesion of the brain, which is also a kind of stroke precursor, usually caused by ischemia of the anterior cerebral artery, and if not treated in time, it will cause Lower limb paralysis and urinary incontinence. In addition, headaches, especially those that are repeatedly aggravated in the elderly, can also be a cause of intracranial vascular occlusion or hemorrhage. Drowsiness or insomnia may also be a precursor to brain lesions. All of these symptoms can be precursors of stroke and need to be taken seriously for timely detection and preventive treatment.