The Board has determined that the appellant likely developed a schizo-affective disorder, bipolar type during his National Guard service and granted service connection for this condition.

The Board remands the claims for a rating in excess of 50 percent for schizo-affective disorder and entitlement to TDIU due to additional development needed.

The Board has remanded the case due to insufficient evidence regarding the nature and etiology of the Veteran's acquired psychiatric disorder, specifically schizoaffective disorder and bipolar type. The Veteran contends that his symptoms began during service.

The Board denied the veteran's claim of entitlement to service connection for an acquired psychiatric disorder, including paranoid type schizophrenia in a September 1989 decision. The RO denied claims of entitlement to service connection for an acquired psychiatric disorder, including paranoid type schizophrenia when it issued unappealed rating decisions in March 1998, January 2000, November 2001, and January 2002. Evidence received since the January 2002 final rating decision has been previously considered by the decisionmakers in the denial of the claim of entitlement to service connection for an acquired psychiatric disorder, including paranoid type schizophrenia, and as such is duplicative and redundant.

The Board granted service connection for obstructive sleep apnea, effective from the date of the February 2025 rating decision.