 This 21 month old male presented for delayed motor development, "jaw quivering" and "lazy eye." He was an 8 pound 10 ounce product of a full term, uncomplicated pregnancy-labor-spontaneous vaginal delivery to a G3P3 married white female mother. There had been no known toxic intrauterine exposures. He had no serious illnesses or hospitalizations since birth. He sat independently at 7 months, stood at 11 months, crawled at 16 months, but did not cruise until 18 months.