Idiopathic Horner’s Syndrome: An Enigma.

Horner’s syndrome (Bernard-Horner’s syndrome or oculosympathetic palsy) is a clinical syndrome caused by paralysis of the cervical sympathetic trunk. It is characterized by miosis, ptosis, enophthalmos and anhidrosis. Most of the cases are due to vascular causes, trauma or cancer. Occasionally, Horner’s syndrome is encountered in a patient where no cause can be ascertained. Here, we describe one such case.