Nonepileptic events in normal and neurologically handicapped children: a video-EEG study. 
Nonepileptic episodic phenomena are reported in 27 of 124 children (21.8%) who had video-electroencephalographic studies performed.  Mean age was 7.4 years (S.D.: 6.0; range: 0.1-19).  Nineteen (70%) were neurologically impaired (Group 1) and 8 (30%) neurologically normal (Group 2).  The final diagnoses included movement sequences (48%), conversion disorder (22%), behavioral staring (18%), sleep disorder (11%), behavioral episodes (8%), and central apnea (8%).  In Group 1, abnormal movements (58%) and staring (26%) were most common; conversion disorder (62.5%) was most common in Group 2.  Unnecessary medication therapy was prevented in many children.  Video-electroencephalography is valuable in preventing over-medication and misdiagnosis.