spasmus /spas·mus/ (spaz´mus) [L.] spasm.
spasmus nutans
spasmus nu´tans nodding spasm.
spas·mus nu·tans (sp z m s n tnz )n. 1. Nodding spasm. 2. Nystagmus with head-nodding movements. |
spasmus
[L.] spasm.
spasmus nutans
nodding spasm.
spasmus nutans
A pendular, rapid nystagmus of small amplitude which presents in infancy. It is generally bilateral, although asymmetrical and horizontal in most cases. Rotary and vertical types have been reported. The condition is associated with head nodding and less frequently with torticollis. The cause is unknown and the condition subsides spontaneously in early childhood. It must be differentiated from other disorders, such as congenital nystagmus and intracranial tumours, which also result in head nodding, and nystagmus.
spasmus nutans
Neurology A self-limiting acquired nystagmus characterized by a triad: horizontal or pendular nystagmus, head nodding, head tilting; SN may last months to yrs and be associated with optic gliomas and other brain tumors
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