There is a type of vertigo that has only dizziness, light-headedness, and also swaying instability or even falling, but does not favor one side, does not have a clear sense of motion of the surroundings or its own rotation, and does not show nystagmus, called pseudovertigo, or nonsystemic vertigo. The following are the diseases that are easily confused with this disease. 1. Otogenic vertigo refers to vertigo caused by abnormal vestibular vagal sensation. When vagal fluid accumulation (Meniere’s syndrome), motion sickness (motion sickness), vaginitis, vagal hemorrhage or poisoning, vestibular neuritis or damage, middle ear infection, etc. occur, they can cause postural balance disorder and vertigo. Since there is a close connection between the vestibular nucleus and the nucleus of the motoneuron through the medial bundle, nystagmus often occurs when the vestibular apparatus is pathologically stimulated. 2. Oculogenic vertigo Non-motor illusion vertigo, mainly manifested as a feeling of instability, which is aggravated when using the eyes excessively and reduced after resting with eyes closed. The vertigo lasts for a short period of time and is aggravated when the eyes are opened to look at external moving objects, and is relieved or disappears when the eyes are closed. It is often accompanied by blurred vision, loss of vision or diplopia. Visual acuity, fundus and ocular muscle function examination are often abnormal, and there is no abnormal performance of the nervous system. 3. Peripheral vertigo Vertigo caused by lesions in the vagus or vestibular part of the inner ear or extracranial segment of the vestibular nerve (in the internal auditory canal) is peripheral vertigo, including acute vaginitis and Meniere’s disease. Its characteristics are: ① vertigo is intense rotational, short duration, and the change of head position or body position can aggravate vertigo significantly. (2) Nystagmus: nystagmus coexists with vertigo attack, mostly horizontal or horizontal plus rotational nystagmus. Usually there is no vertical nystagmus, the amplitude can be changed, and the nystagmus may subside or disappear after a few hours or days. Head position induced nystagmus is mostly fatigue, and temperature induced nystagmus is mostly seen in hemianopia. (iii) Balance disorders: mostly rotational or up-and-down swaying motion sensation, unstable standing, spontaneous tilting, static upright test mostly tilting in the direction of the slow phase of nystagmus. ④Autonomic symptoms: such as nausea, vomiting, sweating and pallor, etc. ⑤ It is often accompanied by tinnitus and hearing impairment without brain function damage. 4. Central vertigo refers to vertigo caused by lesions in the vestibular nucleus, brainstem, cerebellum and temporal lobe of the brain. Features: (1) The degree of vertigo is relatively light, long lasting, rotational or motion to one side, which can be relieved by closing the eyes, not related to head or body position change. (2) The nystagmus is coarse and can be a single vertical nystagmus and/or horizontal or rotational type, and can persist for a long time with constant intensity. The direction of nystagmus is not consistent with the side of the lesion, and the direction of spontaneous tilting and static upright test tilting are not consistent. (iii) Balance disorder: It is manifested as rotational or to one side motion sensation and unstable standing. Most of the vertigo and balance disorder are inconsistent in degree. ④Autonomic symptoms are not as obvious as peripheral ones. ⑤No hemianopia, hearing impairment, etc. ⑥It may be accompanied by brain function damage, such as cerebral nerve damage, extraocular muscle palsy, facial and tongue palsy, ball palsy, limb paralysis, high cranial pressure, etc.