Motion sickness

Introduction Motion sickness is a general term for motion sickness, that is, motion sickness, seasickness, airsickness, and diseases caused by various causes such as sway, bumps, rotation, and acceleration.

Cause

The pathogenesis of motion sickness is not fully understood, and is mainly related to the influence of vestibular function. The capsular sac of the inner eardrum of the vestibular device and the sac of the balloon are the linear motion of the upper and lower sides and the left and right, and the three semicircular canal cells feel the rotational motion. When the plaque or hair cells are subjected to a certain amount of abnormal motor stimulation, the nerve impulses are transmitted from the vestibular nerve to the vestibular nucleus and then to the cerebellum and hypothalamus, thus causing a series of clinical manifestations with vertigo as the main symptom. . The vestibule is stimulated to affect the reticular formation, causing blood pressure drop and vomiting.

The vestibular nucleus causes nystagmus through the medial longitudinal bundle fibers to the ocular muscle nucleus. The cerebellum and hypothalamus are affected by nerve impulses and cause changes in muscle tone throughout the body. Motion sickness may have a relationship with vision. For example, people can also cause the disease when they stare at a fast moving or rotating object. Stimulation of the cerebellum may also be another mechanism of the disease. In addition, high temperature, high humidity, poor ventilation, noise, special odor, emotional stress, lack of sleep, excessive fatigue, hunger or satiety, physical weakness, inner ear disease, etc. are easy to induce the disease.

an examination

Related inspection

Otolaryngology CT examination of cranial CT examination of intracranial pressure monitoring

The disease often occurs after a few minutes to a few hours of riding, sailing, flying, and other operations. Initially felt upper abdominal discomfort, followed by nausea, pale, cold sweat, immediately dizziness, depression, increased salivation and vomiting. There may be blood pressure drop, deep and slow breathing, and nystagmus. Severe vomiting causes loss of water and electrolytes.

Symptoms usually disappear or diminish within tens of minutes and hours after stopping or slowing down. It also gradually recovered after a few days, accompanied by apathetic and limb weakness. After repeated or accelerated exercise, the symptoms can reappear. However, after multiple episodes, the symptoms can be alleviated or not even occurred.

Differential diagnosis

Differential diagnosis of motion sickness:

1. Inner ear vertigo: Also known as Meniere's disease, it is an inner ear lesion caused by endolymphatic hydrops. Its clinical manifestations are sudden onset of dizziness, which can be felt or disturbed when it is dizzy. Often accompanied by nausea and vomiting, pale, sweating and tinnitus, hearing loss, nystagmus and so on. The disease can belong to the category of Chinese medicine vertigo, acupuncture treatment of vertigo, is recorded in the "Acupuncture and Moxibustion". Older modern reports were seen in the early 1960s. The electric scalp needle and the moxibustion moxibustion method carried out in recent years have obvious effects on controlling acute attacks. At present, the average effective rate of acupuncture treatment of this disease is about 90%.

2, vestibular neuritis: vestibular neuritis (vestibularneuronitis) is a sudden vertigo caused by vestibular neuron involvement. More common in young adults.

3, vertebrobasilar insufficiency: vertebral-basal artery insufficiency, otolaryngology disease, common in middle-aged and elderly, because the cerebellum and brain stem rely on the blood supply of the vertebral-basal artery, when the vertebral-basal artery occurs, the brain Poor blood flow, insufficient blood supply, often vertigo and other symptoms. The disease belongs to the category of "dizziness" and "sputum syndrome" of Chinese medicine. The pathogenesis of the disease is often associated with blood stasis and blood stasis, disturbances on the jaws, and obstruction of the air machine.

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