XXXX : clinical features and diagnostic evaluation.

@entity1 @entity11438 @entity16 @entity425 @entity148 @entity158 @entity166 @entity130
BACKGROUND: @entity11438 is an uncommon @entity16 of unknown etiology involving the brachial plexus, which is manifest by shoulder and arm @entity158 , @entity425 , and sensory loss. Because of the diversity and variability of the initial features and similarity to other neurologic and @entity16 , @entity1 may initially present to internists, orthopedic surgeons, or pulmonologists, and may be initially diagnosed with an alternative disorder. REVIEW SUMMARY: @entity11438 occurs at an annual incidence rate of 1 to 2 cases per 100,000 population. The disorder is most common in adulthood, but @entity1 of any age may be affected. @entity158 is the most common initial symptom and is followed by @entity425 in the distribution of a single nerve or diffuse regions of the brachial plexus. Although the exact etiology is unknown, many associated factors, such as immunizations, minor @entity130 , @entity166 , pregnancy, and surgical procedures have been associated with the development of the disorder. Evaluation with electrodiagnostic and radiographic studies is useful in confirming the diagnosis and excluding alternative disorders. No treatment has been definitively proven to improve the course of the disorder; however, the overall prognosis is good, with approximately 90% of @entity1 demonstrating significant improvement. CONCLUSIONS: @entity11438 is an important, potentially debilitating disorder, which may present to physicians in multiple specialties. Awareness of this disorder may preclude unnecessary testing or surgical procedures and can guide toward appropriate treatment with physical therapy. Counseling @entity1 about the overall good prognosis can help appease @entity1 ' @entity148 about a more sinister diagnosis or course.
