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Teachable Moment | Less Is More

A Common Cause of Cranial Nerve VI Palsy—Hidden in Plain Sight A Teachable Moment

Anubha Agarwal, MD1; Adva Eisenberg, MD1; Suzanne K. Woods, MD1,2
[+] Author Affiliations
1Department of Medicine, Duke University Medical Center, Durham, North Carolina
2Department of Pediatrics, Duke University Medical Center, Durham, North Carolina
JAMA Intern Med. 2016;176(8):1066-1067. doi:10.1001/jamainternmed.2016.2661.
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This case of an otherwise healthy man in his 30s who presented to an optometrist with sudden-onset horizontal diplopia and blurry vision illustrates the importance of assessing the prior probability of an underlying disease before diagnostic testing is undertaken and considering how test results may influence treatment.

Article InformationCorresponding Author: Anubha Agarwal, MD, Duke University Medical Center, 2301 Erwin Rd, Durham, NC 27710 (anubha.agarwal@duke.edu).

Published Online: June 27, 2016. doi:10.1001/jamainternmed.2016.2661.

Conflict of Interest Disclosures: None reported.

Additional Contributions: We thank the patient for granting permission to publish this information.

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Magnetic resonance image of the brain with contrast illustrating asymmetric left-sided enhancement of the dura in the region of Dorello's canal.

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