What's the matter with dizziness when I turn my head?

The patient felt dizzy as soon as he turned his head. It was considered that cervical spondylosis occurred. When the patient changed his position, cervical vertebra compressed the nerve root, and dizziness occurred. It was also considered that the patient had cerebrovascular diseases, such as hypertension, etc., which also occurred. It was suggested that the patient should go to the hospital for examination as soon as possible to clarify the cause.