Entitlement to service connection for an acquired psychiatric disorder, to include posttraumatic stress disorder (PTSD), mood disorder, and/or schizoaffective disorder, is remanded.

Board reasoning

The Board remanded for further development, including obtaining records related to stressors in Nam Phong, Thailand, and for an addendum opinion after new records are secured. It emphasized that substantial compliance with previous remand directives is needed to address the etiologies of the claimed disorders and to verify stressors, including a possible fatal overdose in 1973, per the June 2023 Joint Motion for Remand (JMR). The Board stressed that additional records and a medical opinion are required to determine whether any acquired psychiatric disorder began in service or is etiologically related to service, and to consider the Veteran's stressor evidence accordingly.