Nystagmus and Multiple Sclerosis

Nystagmus is a condition that causes the eyes to make quick, repetitive, uncontrolled movements — from side to side, up and down, or in a circular pattern — making the eyes appear to bounce around. The jerky motion may be triggered by optical stimuli or physical motion, or may occur at rest.

Nystagmus can be mild, occurring only when a person looks to the side, or it may be severe enough to impair vision. Nystagmus often makes it difficult to focus steadily on a fixed object.

What causes nystagmus?

Nystagmus can be an inherited condition, showing up in early childhood, or it can develop later in life due to an accident or illness. Nystagmus is often a symptom of an underlying medical problem, such as stroke, multiple sclerosis, or head trauma. Other causes of nystagmus include severe nearsightedness, albinism, inflammation of the inner ear, central nervous system diseases, and medication side-effects. Sometimes the cause may be unknown.


In persons with multiple sclerosis, lesions in the brainstem and cerebellum may interfere with the nerve signals that affect motion of the eyes causing nystagmus. According to the MS Foundation, approximately 35 percent of individuals with multiple sclerosis may develop nystagmus. Abnormal gaze-holding mechanisms, vestibular imbalance, and impaired fixation are the most common causes of nystagmus in multiple sclerosis.

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MS Signs and Symptoms: What is Nystagmus?