History

• Male, 48 years.
• The patient had a two-year history of symptoms prior to being seen at the movement disorder clinic.
• He had a bilateral rest tremor in the arms which was worse on the right than the left.
• He developed a general slowness of movement and a stooped posture.
• He suffered from a behavioral disorder/psychosis requiring neuroleptic therapy.
• Converting to an atypical neuroleptic had no effect on the neurological features.