The purpose of this study is to determine any sleep disordered breathing in veterans with Gulf War Syndrome (GWS) and compare it to healthy normal asymptomatic Gulf War veterans. This study will also determine the effect of treatment with continuous positive airway pressure on veterans with Gulf War Syndrome. 1. The investigators hypothesize that sleep complaints (insomnia, un-refreshing sleep and daytime fatigue) among GWS patients are related to increased sleep fragmentation secondary to the presence of sleep disordered breathing in GWS patients. 2. The investigators hypothesize that increased collapsibility of the upper airway during sleep with the development of inspiratory flow limitation (IFL) and sleep disordered breathing causes the increased sleep fragmentation in GWS patients. 3. The investigators hypothesize that correction of IFL and sleep disordered breathing in GWS patients will result in an improvement of their sleep quality resulting in an improvement of their sleep complaints and other functional symptoms.
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Change of Fatigue Symptom
Timeframe: 3 weeks treatment with either therapeutic or sham CPAP
The Prevalence of Inspiratory Flow Limitation (IFL) During Sleep in GWS.
Timeframe: On a full night polysomnogram