The Board found that the veteran's claims of service connection for a neck disorder, bilateral knee disorder, stomach disorder, hiatal hernia, fatigue, and back disorder (arthritis of the lumbosacral spine) are not well-grounded due to lack of medical evidence supporting these conditions.

The Board has determined that the AOJ did not obtain all necessary opinions regarding whether the Veteran's symptoms are related to an undiagnosed illness or medically unexplained chronic multisymptom illness (MUCMI). The claims for service connection for fatigue, fibromyalgia, left elbow disorder, right elbow disorder, and sleep disorder are remanded for further development.

The Veteran withdrew his appeal before the Board could make a decision on his service connection claims.

The Board has remanded the Veteran's claims for service connection due to inadequate development of her exposure history and lack of adequate medical opinions. The case will be returned to the AOJ for further action.

The Veteran's claim for service connection for migraine headaches, as secondary to tinnitus, is granted. The claims for service connection for hearing loss disability and a disability manifested by shortness of breath other than chronic sinusitis and allergic rhinitis are denied. The claims for service connection for an intestinal disability (diverticulitis), fatigue, hypertension, neck disability, right upper extremity radiculopathy, left upper extremity radiculopathy, right shoulder disability, left shoulder disability, upper and lower back disability, right lower extremity radiculopathy, left lower extremity radiculopathy, right hip disability, left hip disability, right foot pain, left foot pain, gastroesophageal reflux disease (GERD), and an acquired psychiatric disorder are all denied.