What reason is abrupt giddy station unsteady

Hello, suddenly show dizziness stand unstable, if also accompanied by nausea and vomiting, visual rotation and other performance, first of all to consider the possibility of benign positional vertigo. If also accompanied by tinnitus, ear closure and other performance, then consider labyrinthitis, vestibular neuritis and other diseases. If frequent attacks of dizziness, stand unstable, then be highly alert to the possibility of transient ischemic attack, this disease may be a precursor to cerebral infarction, must not be careless. No matter what kind of cause of dizziness, unstable standing, need to go to the hospital in time to do relevant examination, such as otolaryngology specialist examination, intracranial blood vessel Doppler ultrasound, head ct or magnetic resonance, etc., after a clear diagnosis and symptomatic treatment.