Congenital Horner's syndrome: report of one case.

Congenital Horner's syndrome is an infrequent illness caused by a lesion of the cervical sympathetic nerve fiber. It's clinical features are facial anhidrosis, ptosis, miosis, and hypochromia iridis of the affected side. The subject of this report, a full-term male newborn, had had a smooth birth process but was found on the second day of life to have narrowing of the palpebral fissure and absence of facial flushing on the right side when he cried. Ophthalmologic examination revealed a smaller right pupil. The above abnormalities proved to result from a post-ganglionic lesion, after pharmacologic test. Roentgenograms of the skull, chest and cervical spine were normal, and a computed tomography scan of the cervical spine showed no abnormalities. The diagnosis was of congenital Horner's syndrome. Since no congenital Horner's syndrome to the newborn period could be found in previous literature, this report is presented.