<unk>  is classified into either peripheral or central, depending on the location of the dysfunction of the vestibular pathway, although it can also be caused by psychological factors.<unk>  can also be classified into objective, subjective, and pseudovertigo. Objective<unk>  describes when the person has the sensation that stationary objects in the environment are moving. Subjective<unk>  refers to when the person feels as if they are moving. The third type is known as pseudovertigo, an intensive sensation of rotation inside the person's head. While this classification appears in textbooks, it is unclear what relation it has to the pathophysiology or treatment of<unk> . Peripheral<unk>  that is caused by problems with the inner ear or vestibular system, which is composed of the semicircular canals, the vestibule (utricle and saccule), and the vestibular nerve is called "peripheral", "otologic", or "vestibular"<unk> . The most common cause is<unk><unk><unk><unk>  (BPPV), which accounts for 32% of all peripheral<unk> . Other causes include Ménière's disease (12%), superior canal dehiscence syndrome, labyrinthitis, and visual<unk> . Any cause of inflammation such as common cold, influenza, and bacterial infections may cause transient<unk>  if it involves the inner ear, as may chemical insults (e.g., aminoglycosides) or physical trauma (e.g., skull fractures). Motion sickness is sometimes classified as a cause of peripheral<unk> . People with peripheral<unk>  typically present with mild to moderate imbalance, nausea, vomiting, hearing loss, tinnitus, fullness, and pain in the ear. In addition, lesions of the internal auditory canal may be associated with facial weakness on the same side. Due to a rapid compensation process, acute<unk>  as a result of a peripheral lesion tends to improve in a short period of time (days to weeks). Central<unk>  that arises from injury to the balance centers of the central nervous system (CNS), often from a lesion in the brainstem or cerebellum, is called "central"<unk>  and is generally associated with less prominent movement illusion and nausea than<unk>  of peripheral origin. Central<unk>  may have accompanying neurologic deficits (such as slurred speech and double vision), and pathologic nystagmus (which is pure vertical/torsional). Central pathology can cause disequilibrium, which is the sensation of being off balance. The balance disorder associated with central lesions causing<unk>  is often so severe that many people are unable to stand or walk. A number of conditions that involve the central nervous system may lead to<unk>  including: lesions caused by infarctions or hemorrhage, tumors present in the cerebellopontine angle such as a vestibular schwannoma or cerebellar tumors, epilepsy, cervical spine disorders such as cervical spondylosis, degenerative ataxia disorders, migraine headaches, lateral medullary syndrome, Chiari malformation, multiple sclerosis, parkinsonism, as well as cerebral dysfunction. Central<unk>  may not improve or may do so more slowly than<unk>  caused by disturbance to peripheral structures. Alcohol can result in<unk>  alcohol nystagmus (PAN).
symptom of Benign paroxysmal positional vertigo
medical cause of Tinnitus
symptom of Bulbar palsy
symptom of Vertigo
symptom of Glaucoma
symptom of Oculopharyngeal muscular dystrophy
symptoms of Sympathetic ophthalmia
symptom of Giant cell arteritis