It is not unheard off for people that have gone through a traumatic experience to develop Post-traumatic stress disorder (PTSD.) Soldiers and those in the military are known to experience PTSD more than other professions due to the stress and trauma caused through warfare. As an example, the Wikipedia article on PTSD informs us that soldiers are at a high risk of developing the disorder:

Military service is a risk factor for developing PTSD. Around 78% of people exposed to combat do not develop PTSD; in about 25% of military personnel who develop PTSD, its appearance is delayed.

Could Clone troopers suffer from PTSD as a result of trauma on the battlefield or as a result of Killing their former Jedi commanders?