The mood swings were more likely post-traumatic stress. The effects of agent orange are more physical. things like cancer and body rashes, or liver damage, perhaps kidney problems. Seizures would be an effect on the central nervous system. My friend who had the agent orange problems also had post-traumatic stress problems. One night he was sitting on our porch (we lived in the woods, near a large cypress slough) and told us he was seeing Viet Cong in the woods. Later he was at the V.A. hospital next to U.F. and he and another patient were stopped on their way to the Bell Tower (armed).