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From the Gulf War Illness Research Unit, Guys, Kings, and St. Thomas School of Medicine, London, UK.
Address correspondence and reprint requests to Dr. M.K. Sharief, Department of Neurology, Hodgkin Bldg., Guys Hospital, London SE1 1UL, UK; e-mail m.k.sharief{at}kcl.ac.uk
Background: UK veterans who were deployed to the Gulf in 1990 to 1991 reported higher prevalence of neuromuscular symptoms.
Objective: To investigate whether these Gulf War-related symptoms were associated with objective evidence of neuromuscular dysfunction.
Methods: Forty-nine Gulf War veterans with more than four neuromuscular symptoms (Gulf-ill), 26 Gulf-well veterans, 13 symptomatic Bosnian veterans (Bosnia-ill), and 22 symptomatic veterans who were not deployed to the Gulf (Era-ill) underwent detailed neurophysiologic assessment: nerve conduction studies, quantitative sensory and autonomic testing, and concentric needle and single-fiber electromyography (EMG).
Results: Nerve conduction studies detected carpal tunnel syndrome in two Gulf-ill, two Gulf-well, one Bosnia-ill, and three Era-ill veterans. Ulnar neuropathy was detected in one Gulf-ill and two Era-ill veterans. However, results of detailed nerve conduction studies of the Gulf-ill veterans were comparable with results observed in the other three groups. Quantitative sensory and autonomic assessments also failed to show any specific abnormalities in the Gulf-ill group. Similarly, quantitative assessment of concentric needle and single-fiber EMG detected no chronic denervation or myopathic changes or any abnormalities of neuromuscular transmission in the Gulf-ill veterans.
Conclusion: Gulf War-related neuromuscular symptoms are not associated with specific impairments of peripheral nerves, neuromuscular junctions, or skeletal muscles.
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