Folie à deux (‘madness for two’), also known as shared psychosis or shared delusional disorder (SDD), is a psychiatric syndrome in which symptoms of a delusional belief, and sometimes hallucinations, are transmitted from one individual to another.


Cluster Number:
Wiki Number: W083
Diagnosis: Folie A Deux (Shared Psychosis)
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Symptoms: “Folie-a-Deux” (madness for two) is a shared psychosis or shared delusions or hallucinations, shared from one to another
Progression: usually there is a dominant “inducer” and a “follower”. Could be delusions like organs removed or improbable good things
Causes: stress and social isolation; stress increases cortisol which increases brain-dopamine developing mental illness
Medications: antipsychotics, mood stabilizers for those with depression,
Therapies: individual or family therapy with a counselor


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