Benign idiopathic dystonia with onset in the first year of life.

Four infants suffering from benign non-fluctuating, idiopathic dystonia with onset in the first year are presented. The discussion includes the relationship to childhood-onset dystonia, the significance of the tremor, the neurotransmitters in the CSF, spontaneous recovery, the risk of recurrence and the preference not to intervene orthopaedically.