I suddenly felt dizzy for only 1 second.

Although dizziness often occurs in our daily lives, we must not ignore its harm to the human body. Because dizziness is likely caused by some physical illness, if you do not seek medical attention in time, you may miss the best time for treatment. The symptoms of dizziness are different for everyone. Some people feel that they suddenly feel dizzy, but this situation only lasts for a second. So what causes this phenomenon?

The root cause of this type of dizziness is generally a transient lack of blood supply to the brain. When the symptoms are severe, brief blackouts and loss of consciousness may occur, which will resolve on their own after a few minutes. When the symptoms are mild, they may only manifest as dizziness. The common reasons are as follows:

1. Vasovagal syncope often has triggers, such as standing for a long time; emotional factors, such as fear, pain, blood phobia, needle phobia, etc.; compression of the carotid sinus, sudden turning of the head, tight collar, etc.

2. Situational syncope This type of syncope occurs in a specific situation

For example, during urination, swallowing, defecation, abdominal pain, laughing, after exercise and after meals.

3. The main cause of orthostatic hypotension is change in body position. This is the most common cause and it may also occur in normal people. The most common situation is that people stand up suddenly after using the toilet (squatting toilet) for a long time. This is a manifestation of transient cerebral ischemia caused by blood accumulating in the lower limbs and being unable to flow quickly to the brain.

Patients who have been bedridden for a long time are also prone to orthostatic hypotension when they stand up suddenly. It is also easy to induce when taking alcohol or certain drugs. If elderly patients do not have the above reasons, they should also pay attention to getting up slowly.

4. Cardiogenic syncope: Syncope caused by heart reasons is often the most dangerous and carries a higher risk of sudden death. This is the target we need to focus on. These are divided into two major categories: a. Organic heart disease. b Cardiac arrhythmia. It is necessary to focus on cardiac ultrasound, electrocardiogram, dynamic electrocardiogram and other examinations.

5. Cerebral syncope Syncope may also occur due to transient spasm and ischemia of the vertebral basilar artery or stroke, headache, etc. Neurological examinations are needed: including CT, MRI, cerebrovascular examination, etc.

Most patients are referred to a neurologist. Depending on the patient's medical history and the characteristics of the disease, some patients may be advised to undergo a cardiovascular examination.