The VA denied the veteran's claim for service connection for polyarthralgias, with a history of fatigue and carpal tunnel syndrome, including as due to an undiagnosed illness. The evidence did not show objective indications of chronic disability resulting from an illness or combination of illnesses manifested by joint pain or fatigue.

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's appeal is remanded due to inadequate VA examinations and a pre-decisional duty to assist error. Additional development is needed for service connection of carpal tunnel syndrome, increased ratings for lower extremity radiculopathies, and obtaining a VA TERA opinion.

The Veteran withdrew his appeal for service connection of carpal tunnel syndrome in the left upper extremity, and the Board has dismissed this case.

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.