The Board has determined that the veteran's skin disorder, including xerosis, nummular dermatitis, and mild stasis dermatitis, is not related to his service or herbicide exposure. The claim for service connection is denied.

The Board grants service connection for a skin disability of the bilateral feet, diagnosed as xerosis, finding that it began during active service.

The Board remands the claim for an increased initial rating for a skin disability, including chronic dermatitis, tinea pedis, xerosis and hyperkeratosis, to obtain additional medical evidence regarding systemic therapy and the degree of involvement of nonservice-connected disabilities.

The Veteran withdrew her appeal for service connection for xerosis, RUQ abdominal pain, left ankle condition manifested by pain, and right ankle condition manifested by pain.

The veteran's appeal for earlier effective dates for service connection and benefits was granted. The Board determined that the veteran is entitled to an earlier effective date of May 31, 2019, for TBI with adjustment disorder with mixed anxiety and depressed mood, TDIU, and DEA. Additionally, the veteran is entitled to an earlier effective date of April 22, 2021, for service connection for sleep apnea, diabetes mellitus, xerosis, erectile dysfunction, and SMC.