opsoclonus-myoclonus

Neurology Infantile myoclonic encephalopathy A rare encephalopathy of early childhood onset, which may be idiopathic—or less commonly, due to an occult retinoblastoma—and which may result after respiratory infections and follow a benign but protracted course
Management ACTH and cortisone may induce remissions
Oncology Paraneoplastic opsoclonus-myoclonus syndrome

opsoclonus-myoclonus

Dancing eyes-dancing feet syndrome, see there.