preponderance of the evidence is against the claim , in which case the claim is denied . 38 U . S . C . A . § 5107 ( b ) ( West 2014 ) ; 38 C . F . R . § 3 . 102 ( 2014 ) ; Gilbert v . Derwinski , 1 Vet . App . 49 ( 1990 ) . II . Analysis The Veteran asserts entitlement to service connection for a psychiatric disorder . His symptoms have been variously diagnosed but primarily as PTSD and generalized anxiety disorder . Initially , and to the extent that PTSD has noted to have preexisted service and / or attributed to childhood trauma , to include on VA examination in December 1992 and November