Cervical Disc Herniation and Central Horner Syndrome Hérnia de disco cervical e síndrome de Horner central

Horner syndrome, or oculosympathetic dysfunction, was described by the Swiss ophthalmologist Friedrich Horner in 1869,1 and represents the interruption of the cervical sympathetic nervous system. It is characterized by a symptom triad: ptosis (upside down ptosis), pupillary miosis and facial anhidrosis, although some authors associate a fourth symptom to the syndrome, facial hyperemia.2 It is an unusual entity that has no relation to age, gender or race. The syndrome prognosis depends on the etiology, and underlying patient condition. This case report refers to a rare cause for this entity, which resulted from the compression of the cervical sympathetic preganglionic nuclei by cervical disc core herniation.3,4