Light-headedness is commonly caused by the following reasons: 1. Posterior circulation ischemia, i.e., the carotid artery system of the posterior circulation has a transient ischemia problem, which can lead to light-headedness. 2. Problems with the cervical spine, the most common being cervical spondylosis, which can lead to light-headedness and weakness of the limbs and numbness of the fingers. 3. 4, lack of sleep, the body is in a relatively tired state is also the cause of this problem. 5, anemia, hypoglycemia will also lead to the emergence of light-headedness. 6, some neurological diseases may also be the cause of light-headedness, the specific need for systemic examination, such as the improvement of the corresponding cranial CT, monitoring blood pressure and blood sugar. The cause of the disease must be clarified, and then the corresponding treatment measures should be taken.