Why does sleeping turn over the head to be able to faint

This condition generally belongs to postural vertigo, which refers to vertigo caused by lying down after getting up. It is often seen in Meniere's disease, otolithiasis, cerebrovascular disease, posterior circulation ischemia, posterior inferior cerebellar artery syndrome, neck diseases, such as cervical spondylosis, and migraine vertigo. Generally, positional nystagmus test, pure tone audiometry, electrocochleogram, electronystagmogram, CT, magnetic resonance, electroencephalogram, etc. can be examined. The department of treatment belongs to neurology and otolaryngology.