Cognitive Behavioral Therapy for Insomnia for Gulf War Illness

Inclusion Criteria: * Deployed to the Gulf Theater of operations, as defined by 38 CFR 3.317 in the years 1990-1991, in accordance with the inclusion/exclusion criteria set forth in the federal definition of Gulf War Illness as used for the Gulf War Registry. * This will be confirmed through VA records or by asking veterans to provide a copy of their DD214. * Have Gulf War Illness (GWI) according to the Kansas case definition. * GWI symptom will be assessed with the Kansas Gulf War Military History and Health Questionnaire. * Have an Insomnia Severity Index score greater than or equal to 14. Exclusion Criteria: * Have conditions or substances that may be associated with comorbid insomnia independent of GWI status, including: * a lifetime history of any psychiatric disorder with psychotic features * bipolar disorder * panic disorder * obsessive-compulsive disorder * alcohol or substance dependence * a history of alcohol or substance abuse within the past year * Currently exposed to recurrent trauma or have been exposed to a traumatic event within the past 3 months. * Pregnancy (because insomnia will worsen after 8 weeks). * Prominent suicidal or homicidal ideation. * History of sleep restriction therapy or cognitive restructuring therapies of beliefs related to sleep. * Subjects concurrently enrolled in another clinical trial. * Veterans who work night shifts or have extreme morning or evening tendencies as described below will be excluded in order to avo…