Stroke is a common cardiovascular disease, a major threat to human health, and has a very high death and disability rate, bringing great harm to human health. So what are the signs of stroke? The following we will talk about the signs of stroke, the emergence of abnormalities in time for diagnosis and treatment. 1. Momentary black blindness: It appears suddenly in front of the eyes and can be recovered after a few seconds, without nausea, vomiting, impaired consciousness and limb paralysis. This is caused by reduced intracranial blood flow or microscopic blood clots passing through the retinal artery. Because, the ophthalmic artery is the first branch of the carotid artery and is the most sensitive to carotid artery sclerosis, stenosis and ischemia, so the black mask can be regarded as the earliest alarm signal of stroke. 2. Transient visual impairment: Blurred vision or visual field defects with paroxysmal episodes, mostly recovering on their own within an hour. This is the result of occlusion of the central retinal artery or branch arteries caused by reduced cerebral blood flow, but no cerebral neurological signs have yet appeared, which can be regarded as an early stroke forecast signal. 3, frequent yawning: This is the result of progressive aggravation of cerebral arteriosclerosis, narrowing of the lumen, and increasing cerebral ischemia and hypoxia. According to statistics, within 5 to 10 days before the onset of ischemic stroke, up to 80% of people yawn frequently. Therefore, do not ignore this signal. 4, twisted neck hand numbness: mostly occurs when the head turned to the side shaving, suddenly feel finger weakness, razor to the ground, some speech unclear, 1 to 2 minutes to recover. This is because when turning the head, causing the already hardened carotid artery twist, aggravating the results of the narrowing. This phenomenon is enough to warn people that stroke can occur at any time. 5. Transient ischemic attack: That is, there is a transient hemiparesis or monoparesis, possibly accompanied by aphasia, but of short duration, mostly recovering completely within 24 hours, which indicates that there has been a mild stroke. It can be taken as a precursor to a progressive or complete stroke. The main characteristic of a mini-stroke is a transient Early phenomenon is a mini-stroke. A mini-stroke is medically called a transient ischemic attack. It lasts for a relatively short time and then the symptoms disappear completely. If a mini-stroke is not treated in time, it can become a major stroke. A mini-stroke is characterized by a transient numbness of a limb, either half or bilateral. Some people exhibit it by suddenly dropping a bowl on the floor and not feeling it, and then getting better after a while. Some people may even experience transient numbness without knowing anything. In severe cases, the person may fall down and recover completely after a second or two. Some people also experience dizziness and spinning, which lasts only a few seconds, or a few hours, but they recover quickly. Small strokes can be screened out in any hospital that has the means to do so. Nowadays, imaging is so advanced that most patients can find the cause.