The Board denied the veteran's claims for benefits under 38 U.S.C.A. § 1151 for loss of sense of smell, balance, and aggravation of sleep apnea as a result of VA medical treatment.

The Board granted service connection for PTSD and an initial 20 percent rating for dry eye syndrome with pinguecula, while denying service connection for other psychiatric disorders, bilateral hearing loss, tinnitus, and multiple musculoskeletal conditions. Some claims were remanded for further development.

The Board granted an initial disability rating of 10 percent for loss of sense of smell and taste, as the Veteran's reports were found to be credible.

The Board granted an effective date of April 28, 2015 for the awards of service connection for various conditions including Parkinson's disease with weakness, tremor, and bradykinesia of the left upper extremity; right upper extremity weakness with tremor and bradykinesia (major); depressive disorder with sleep impairment; right lower extremity weakness with bradykinesia, muscle rigidity, and balance impairment; left lower extremity balance impairment with muscle rigidity; speech changes, right CN-10; speech changes, left CN-10; stooped posture, right CN-11; stooped posture, left CN-11; erectile dysfunction; constipation; loss of sense of smell; and right automatic movements, CN-7; left automatic movements, CN-7.

The Board granted an increased disability evaluation of 70 percent for unspecified trauma disorder from April 1, 2023, to July 19, 2023, but denied a rating in excess of 70 percent from July 19, 2023. Service connection was denied for sinusitis and loss of sense of smell.