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Spasmus nutans

Definition:

Spasmus nutans is a disorder affecting infants. It involves rapid, uncontrolled eye movements, head bobbing, and occasionally, abnormal positioning of the neck.

See also: Nystagmus

Causes, incidence, and risk factors:

Most cases of spasmus nutans begin between age 4 months and 1 year. It usually goes away by itself in several months to years.

The cause is unknown, although it may be associated with other medical conditions. (Rarely, symptoms similar to spasmus nutans may be due to certain types of brain tumors.)

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