[2] Causes of Conflict
There is unresolved disagreement that has escalated to an emotional level

Disagreements are normal. When they are left unresolved, however, the associated feelings and emotions will remain in force, at least at some level.

When another situation brings this disagreement back to the forefront, these suppressed emotions can erupt with force, usually far in excess of those associated with the original disagreement. Therefore, it is critically important to resolve disagreements as soon as possible and not let them fester.

EXAMPLE:  Unresolved Disagreement