Cranial nerve lesion is a rare condition in children. However, it might be an alarming sign of serious underlying disease such as neoplasm, systemic disease or congenital anomaly.
Therefore, careful detailed investigation, neuroimaging and differential diagnosis are essential in children, even if the palsy is isolated. The most frequently verifiable cause of acute peripheral facial palsy in children is Lyme borreliosis.
Nearly all are associated with lymphocytic meningitis. Children with idiopathic palsy have a very good prognosis.