Explanation: Post traumatic stress disorder is a mental condition people get after expreriencing a shocking or scary event such as sexual assualt or witnessing murder. Post traumatic stress disorder symptoms includes nightmares and flashbacks, where the brain continously replays the event in your mind, making it feel like you are re-living that hurtful moment again and getting panic attacks. Physical symptoms includes nausea, insomnia, fatique and trembling, If left untreated PSTD can last a lifetime.