I've been feeling dizzy lately. What's going on?

Recently always dizziness, may be caused by mental stress, lack of sleep, anxiety, may also be cervical spondylosis nerve compression, intracranial infection, intracranial space-occupying lesions caused, but also suspected of hypertension, hypothyroidism and other reasons caused. Need to go to the hospital to do head CT examination, confirmed the cause of dizziness.