Dizziness in the head may be caused by the following conditions: 1. Because of having high blood pressure, because when blood pressure is elevated, it will have a considerable impact and dilating effect on the cerebral blood vessels. In addition to this, elevated blood pressure can cause cerebral vascular spasm, and the cerebral blood vessels at the lesion site tend to have impaired blood circulation and may become stagnant. This can further cause disorders of energy metabolism in the brain, causing ischemia and lack of glucose in the brain tissue, which leads to a decrease in the brain’s thinking consciousness or cortical function, and the head will be dizzy. 2. because of cerebrovascular diseases, such as cerebrovascular embolism, cerebrovascular spasm or cerebral infarction, cerebral hemorrhage, etc. When suffering from these cerebrovascular diseases, the blood flow to the cerebral vessels in the lesioned area will be significantly reduced. At the same time, the lesioned cerebrovascular can cause the death of brain cells in the corresponding area, resulting in damage to the higher functions of the brain, which can cause dizziness in the head.