In clinical practice, the specific causes are as follows: 1. non-systemic vertigo, such as cardiogenic disease, can occur when the ejection of blood from the heart is affected, affecting the blood supply to the brain. 2. patients with anemia can also experience dizziness and weakness without headache. 3. patients with lesions of the vestibular system can also experience mainly dizziness, such as Meniere’s syndrome. For example, in Meniere’s syndrome, the patient may experience severe dizziness without headache, accompanied by tinnitus and stuffy ears. 4. Cerebrovascular diseases, such as brainstem or cerebellar lesions, may also cause dizziness without headache, such as cerebellar infarcts and displacements, and brainstem infarcts and displacements, the patient may experience dizziness, and in severe cases, it may be accompanied by unfavorable limb movement and other symptoms of neurological deficits. Severe cases may be accompanied by symptoms of neurological deficits. If necessary, a CT or MRI of the head is required to confirm the diagnosis.