Shuddering attacks: A benign phenomenon in children.

Question: A 2-year-old child was recently brought into my office for repeated episodes of neck stiffening and shivering movements of the shoulders and arms. The episodes last 4 to 5 seconds and occur more than 10 times per day, with no apparent pattern except increased frequency at mealtime. Although there has never been loss of consciousness, the parent was worried that these were seizures. The child was diagnosed by a neurologist as having shuddering attacks. Should I start antiepileptic medications for this child?

Answer: Shuddering attacks are involuntary movements of the head and upper extremities that occur during normal activities and do not impair consciousness. Normal neurologic examination findings and normal electroencephalogram tracing will confirm that this child has shuddering attacks, a benign phenomenon that requires no further investigation or medical therapy. The condition is of unknown cause but is distinct from epilepsy and neither warrants nor responds to antiepileptic medications. Parents can be reassured that attacks will decrease in frequency and will spontaneously remit with age.