J Korean Neurol Assoc.
2010 Feb;28(1):50-52.
Lambert-Eaton Myasthenic Syndrome (LEMS) Presented With Ocular Symptoms
- Affiliations
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- 1Department of Neurology, Catholic University of Daegu, School of Medicine, Daegu, Korea. jihelpgod@cu.ac.kr
- 2Department of Ophthalmology, Catholic University of Daegu, School of Medicine, Daegu, Korea.
Abstract
- Lambert-Eaton myasthenic syndrome (LEMS) is characterized clinically by fluctuating muscular weakness; presentation with ocular symptoms is unusual. A 60-year-old man had developed diplopia and ptosis 2 years previously. The findings of a neurologic examination were normal except for bilateral ptosis and ophthalmoplegia. The amplitude of compound muscle action potentials recorded on the abductor digiti minimi increased (by more than 500%) during 50-Hz stimulation. This case demonstrates that LEMS should be included in the differential diagnosis of myasthenic symptom confined to the ocular muscles.
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