Syncope is a sudden onset of temporary, widespread cerebral blood supply deficit resulting in a brief loss of consciousness. It is mostly caused by somatic factors, but can also be secondary to impaired blood circulation to the brain. Elderly people, intense exercise after sedentary, etc. are prone to syncope. What are the clinical manifestations and preliminary diagnosis of easy fainting symptoms? 1, in addition to the patient’s direct medical history, it is also necessary to ask the witness to provide the situation at the time, including asking about the situation before the fainting, whether there is an aura, etc.; the degree and duration of impaired consciousness at the time of fainting, as well as the color, pulse, incontinence and limb twitching at the time; and the subjective discomfort after recovery of consciousness, etc. 2. Pay attention to the triggers of syncope, for example, simple syncope often has stimulating factors such as sadness, fear, anxiety, dizziness, blood, trauma, severe pain, sweltering heat, fatigue, etc.; cardiogenic syncope is mostly seen in excessive exercise or improper medication; also pay attention to whether there are triggers such as urination, stool, cough, blood and water loss. 3, pay attention to the position and head position during the attack, upright hypotensive syncope mostly occurs when changing from prone position to standing position, carotid sinus allergic syncope mostly occurs when the head position suddenly turns, etc. 4, pay attention to the speed and time of the fainting attack, such as reflex syncope generally starts slightly slow and short; cardiogenic syncope generally starts suddenly and varies in length; cerebral syncope generally starts more slowly and varies in length. 5, pay attention to the clinical manifestations of syncope, generally sudden loss of consciousness, fall, pale, cold limbs, no convulsions, no trauma and tongue bite and urinary incontinence. Transient syncope, also called simple, vasovagal syncope, is a sudden and brief loss of consciousness that can be accompanied by systemic pioneer symptoms, such as dizziness, dizziness, tinnitus, pallor and cold sweats, etc. Common conditions include upright hypotension; urinary syncope and prolonged hot water baths. Syncope is the sudden onset of temporary, widespread cerebral blood supply deficiency that causes a brief loss of consciousness. It is mostly caused by somatic factors, but can also be secondary to impaired blood circulation to the brain. The clinical features are acute onset and transient loss of consciousness. Patients often have prodromal symptoms about one minute before the onset of syncope, manifested as general discomfort, blurred vision, tinnitus, nausea, pallor, cold sweat, and weakness of the limbs, followed by syncope soon after. During syncope, there is loss of random movement and sensation, sometimes apnea, slowed heart rate, or even cardiac arrest, when it is difficult to palpate the radial artery and carotid artery pulsation. Neurological examination reveals dilated pupils, loss of light and corneal reflexes, reduced or absent tendon reflexes, and pathological reflexes, often accompanied by salivation and urinary incontinence. It usually lasts for 2-3 min, followed by gradual recovery of all functions. After awakening, the patient may have a short period of cloudy consciousness, abdominal discomfort, nausea, vomiting, bowel movements, or even diaphoresis, extreme fatigue, drowsiness, lasting from a few minutes to half an hour, and there can be no positive signs on examination after the attack. Recurrent syncope: It is the frequent occurrence of syncope with a certain degree of recurrence. May suffer from acute pulmonary infarction or paroxysmal supraventricular tachycardia, cardiogenic syncope. Clinical signs such as decreased blood pressure, slowed and faint heart rate, and pallor should be noted, as should the presence of urinary incontinence, twitching of the limbs, biting of the tongue, and the duration of the episode.