When children are thrust into the middle of a divorce, the matter can be difficult on an emotional level for all parties involved. Parents might have differing ideas about what is best for the children, and the children themselves may feel torn about which parent they want to spend time with. As tough as settling child custody and visitation can be during marriage dissolution, these issues don't die once a resolution is reached. Instead, child custody modification, as well as visitation modification, may be justified if certain problems arise.
One issue that can affect an initial custody or visitation determination, or a modification of visitation or custody, is drug use. Since courts make their custody determinations based on the best interests of the children involved, judges will weigh factors like substance abuse when making their decisions. Yet, when parents are separated, it may be difficult for one parent to prove that the other is using drugs.