Folie à famille: shared paranoid disorder in a Vietnam veteran and his family.

Reports of folie à famille are rare; this may be the first reported case involving a Vietnam veteran. Expression of his paranoid schizophrenia involved delusions and hallucinations relating to Vietnam, and his wife and children shared his paranoia. Typical of folie à famille were the dominant family member, the threat of violence, and the family's social isolation, frequent crises, and stable membership. Although the veteran's intrusive recollections of his Vietnam experience were typical of posttraumatic stress disorder, he acted on rather than avoided them. Treatment focused on the entire family, partly to minimize future problems in the children.