Spasmus nutans is a disorder affecting infants and young children. It involves rapid, uncontrolled eye movements, head bobbing, and occasionally, abnormal positioning of the neck.
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 or other serious conditions.)
- Small, quick, side-to-side eye movements (nystagmus) - both eyes are involved, but each eye may move differently
- Head nodding
- Head tilting
Signs and tests
A neurologic examination confirms the presence of the symptoms.
Tests may include:
CT scan of the head MRIscan of the head
Usually, this disorder goes away on its own without treatment.
There are usually no complications.
Calling your health care provider
Call for an appointment with your health care provider if your child has rapid involuntary movements of the eyes or head nodding. The doctor will need to perform an exam to rule out other possible causes for the symptoms.