Symptoms of nystagmus in children

summary

Nystagmus is one of the common signs of nervous system diseases. The manifestations of nystagmus are different in different parts of the body after injury. In the face of different types of nystagmus, targeted treatment is needed. Here are some common types of nystagmus. Now let's share the symptoms of nystagmus.

Symptoms of nystagmus in children

The first one is bounce nystagmus. Bounce nystagmus is the type of nystagmus that neurologists are more likely to encounter. It is a kind of vertical sharp bounce nystagmus, with slow phase up and fast phase down. It is more obvious when gazing outward and downward. It is caused by vestibulocerebellar system involvement, including hereditary and acquired cerebellar degeneration, stroke, midbrain abnormalities (Chiari malformation) and multiple sclerosis (MS). It may also be caused by drugs (lithium, antiepileptic drugs, opioids) or idiopathic etiology.

The second one is rebound nystagmus. Rebound nystagmus is a kind of vertical sharp wave nystagmus with slow phase downward and fast phase upward; It usually appears when the eyeball is in the middle. It is caused by the damage of brainstem nuclei and pathways that mediate the movement of upper visual eye, including vestibular nerve, hypoglossal nerve peripheral nucleus and other medial medullary nuclei, including ventral tegmental tract, cerebellar combining arm, medial longitudinal tract and so on. The causes include MS, stroke, tumor and Wernicke encephalopathy. Jumping nystagmus can cause vertical vibration visual hallucination, but it can be relieved or transformed into jumping nystagmus; If there is a sustained rebound nystagmus, treatment is needed.

Third: rotational nystagmus rotational nystagmus is a vertical sudden wave nystagmus, the eyeball will rotate around the line of sight. It is usually located in lateral medulla oblongata, medial longitudinal tract and rostral midbrain. The causes include stroke, MS and tumor. Rotational nystagmus can persist and lead to vibration visual hallucination.

matters needing attention

1. Involuntary persistent and regular nystagmus. Congenital nystagmus is uncontrollable, which is called involuntary. 2. Amblyopia is mostly binocular (except monocular or asymmetric congenital nystagmus). If there is no complication or ametropia, the degree of both eyes is similar. 3. Compensatory head position compensatory head position, mainly for the left and right facial deflection. Only a few cases showed mandible lifting or adduction, and a few cases had head tilt. 4. Compensatory frequent blinking. A few of them can blink frequently. The more attention they pay to the target, the more frequent they blink, fast and frequent, which is obviously related to mental tension.