Parkinson's disease presenting with oculogyric crisis in the off period.

We herein report the case of a 67-year-old Japanese man diagnosed with sporadic Parkinson's disease (PD) at 52 years of age who presented with oculogyric crisis (OGC) in the off period. Ordinarily, OGC is caused by postencephalitic parkinsonism or the chronic use of antidopaminergic medications. The OGC began at 65 years of age and was associated with the wearing-off of symptoms. The dominant OGC feature was tonic deviations in eye posture induced by looking upward with prominent retrocollis. The administration of control dopaminergic medications led to improvements in the wearing-off phenomenon and OGC. This observation confirms that sporadic PD can induce OGC in the off period.