Use of drugs and other "self help" things such as out right denial that the sufferer has done or is doing anything wrong in any way.. in a household where there are 3 young children living with the sufferer at home every day.

For clarification.. when the sufferer knows they have PTSD yet denies that any of their verbal, physical actions are affecting the children or others around them and believes its all every one else's fault and will not rationally discuss the issues.