A Case of Multiple Sclerosis Presenting with Thoracic Lhermitte’s Sign

Abstract

Lhermitte’s sign (LS) is a transient symptom consisting of an electric shock-like sensation radiating ascending along the spinal cord during forward flexion of the neck. It may be associated with sensory complaints such as hypo or hyperesthesia. Although it ismore common in cervical lesions, it can also be seen less frequently in thoracic lesions. LS is classified as one of the paroxysmal pain syndromes of multiple scle- rosis (MS). It can also be seen in cervical spondylosis, disc herniation, trauma, spinal cord malignancies, vitamin B12 deficie ncy, cisplatin tox- icity and radiation myelotoxicity. In cases of thoracic myelitis, LS should be considered and confirmed by neuroradiological an d neurophysiological examinations. In this article, we aimed to present a case of MS with Lhermitte sign due to a lesion in the thoracic spinal cord, as a rare but possible example of spinal cord pathology in the thoracic region.