Show Summary Details
Page of

A 40-Year-Old Female with Increasing Arm Pain and Numbness 

A 40-Year-Old Female with Increasing Arm Pain and Numbness
A 40-Year-Old Female with Increasing Arm Pain and Numbness

Jeffrey A. Cohen

, Justin J. Mowchun

, Victoria H. Lawson

, and Nathaniel M. Robbins

Page of

PRINTED FROM OXFORD MEDICINE ONLINE ( © Oxford University Press, 2021. All Rights Reserved. Under the terms of the licence agreement, an individual user may print out a PDF of a single chapter of a title in Oxford Medicine Online for personal use (for details see Privacy Policy and Legal Notice).

date: 31 July 2021

Neurogenic thoracic outlet syndrome (NTOS) is an uncommon cause of chronic arm pain and numbness but should not be missed. It can lead to chronic pain and disability. Symptoms of NTOS are often aggravated by arm exertion and elevation and tend to occur after exercise rather than activity. A thorough diagnostic evaluation is key, which includes provocative tests, imaging, electromyography/nerve conduction study, and diagnostic injections. Electromyography/nerve conduction study (EMG/NCS) are recommended for NTOS as it is important to exclude an entrapment neuropathy or cervical radiculopathy that may be misdiagnosed as NTOS. EMG/NCS is usually normal in NTOS, however, in severe presentations, the EMG/NCS pattern is most consistent with a lower trunk plexopathy. Treatment options of NTOS are also described in this chapter.

Access to the complete content on Oxford Medicine Online requires a subscription or purchase. Public users are able to search the site and view the abstracts for each book and chapter without a subscription.

Please subscribe or login to access full text content.

If you have purchased a print title that contains an access token, please see the token for information about how to register your code.

For questions on access or troubleshooting, please check our FAQs, and if you can't find the answer there, please contact us.