Opsoclonus

Opsoclonus Opsoclonus

Opsoclonus (pronunciation: op-so-KLO-nus) is a rare neurological disorder characterized by rapid, involuntary, multivectorial (which means having more than one direction), unpredictable, chaotic eye movements, usually with a horizontal component. It is also known as opsoclonus-myoclonus syndrome or dancing eyes-dancing feet syndrome.

Etymology

The term "opsoclonus" is derived from the Greek words "opsi" meaning view and "klonos" meaning turmoil, referring to the chaotic movements of the eyes that are characteristic of this condition.

Symptoms

The primary symptom of opsoclonus is rapid, involuntary eye movements. Other symptoms may include difficulty speaking (dysarthria), difficulties with coordination and balance (ataxia), and, in some cases, a decrease in muscle tone (hypotonia).

Causes

Opsoclonus is often caused by a tumor, most commonly neuroblastoma, or by infections, or autoimmune diseases. It can also occur as a paraneoplastic syndrome, which is a disorder triggered by an immune system response to a tumor.

Treatment

Treatment for opsoclonus usually involves treating the underlying cause, such as removing a tumor or treating an infection. Medications, such as corticosteroids, may also be used to help manage symptoms.

Related Terms

• Neuroblastoma
• Paraneoplastic syndrome
• Dysarthria
• Ataxia
• Hypotonia

External links

• Medical encyclopedia article on Opsoclonus
• Wikipedia's article - Opsoclonus

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