There are more reasons for dizziness in 11-year-old girls, and the common ones are insufficient rest, anemia, high blood pressure, cervical spondylosis and other reasons. 1. insufficient rest: if children do not have a good night’s sleep, or stay up late and get less sleep, they are prone to dizziness. 2. Anemia: some children have the problem of picky eating and partiality, which can easily cause malnutrition over time, which can easily further cause anemia, and one of the symptoms of anemia is dizziness. 3. Hypertension: some children have primary hypertension, which will affect blood circulation and cause insufficient blood supply, thus causing dizziness. 4. cervical spine disease: if in life or study, there is the phenomenon of poor sitting posture, or often look down at the phone, it is easy to cause cervical spine disease, and cervical spine lesions are easy to compress the vertebral artery and the nerve root, resulting in insufficient blood supply, dizziness phenomenon. There are many other causes of dizziness in 11-year-old girls, and it is recommended that parents take their children to the hospital in time for a checkup, and then actively carry out effective treatment after a clear diagnosis.