MBP Basics
Munchausen by Proxy (MBP),
a.k.a. Factitious Disorder by Proxy, Munchausen by Proxy Syndrome, and Munchausen Syndrome by Proxy

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MBP Overview & Definitions

by LOUISA J. LASHER, M.A.

Topics addressed in the following article include:
bulletWhat are Factitious Disorder and Munchausen Syndrome?
bulletWhat is Munchausen by Proxy/Factitious Disorder by Proxy?
bulletMunchausen by Proxy (MBP) - The Basics
bulletSome Differences Between MBP and Other Kinds of Maltreatment
bulletMBP Situational Suspicion Indicators
bulletUsual MBP Perpetrator Characteristics (Not to Be Considered a Profile)
bulletMBP Confirmation-Disconfirmation Process

FACTITIOUS DISORDER, (of which MUNCHAUSEN SYNDROME is a sub-type), (also called "Adult Munchausen", and "Adult Factitious Disorder") is a formal, DSM-IV mental health diagnosis in which people deliberately exaggerate and/or fabricate and/or induce physical and/or psychological-behavioral-mental health problems in themselves. The primary purpose of this behavior is to gain some form of internal gratification, such as attention, for themselves.

MUNCHAUSEN BY PROXY (MBP) (also called Munchausen Syndrome by Proxy, Munchausen by Proxy Syndrome, and Factitious Disorder by Proxy) is a label for a pattern of behavior in which caretakers deliberately exaggerate and/or fabricate and/or induce physical and/or psychological-behavioral-mental health problems in others.

This pattern of behavior constitutes a separate kind of maltreatment (abuse/neglect) that manifests as physical abuse, sexual abuse, emotional abuse, neglect, or a combination. The primary purpose of this behavior is to gain some form of internal gratification, such as attention, for the perpetrator. 

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Munchausen by Proxy (MBP) - The Basics

MBP/FDP is NOT a formal DSM-IV mental health diagnosis. It is a recognized form of maltreatment.

bulletMany MBP maltreatment cases happen within the outpatient setting, rather than inpatient settings.
bulletMost MBP maltreatment cases are confirmed through solid circumstantial evidence; very few are confirmed through direct evidence such as covert video surveillance.
bullet There is virtually no physical or psychological-behavioral-mental health problem that cannot be exaggerated and/or fabricated and/or induced.

Exaggerate: The perpetrator deliberately embellishes a genuine problem.
Fabricate: The perpetrator deliberately makes up a problem story - OR makes it look as if a problem exists.
Induce: The perpetrator deliberately causes a problem to exist. 

bulletExaggeration/fabrication cases should be considered as potentially lethal as cases in which inducing is suspected or confirmed.
bulletA caretaker may perpetrate MBP maltreatment through one or a combination of exaggeration, fabrication, or inducing. The perpetrator may change methods throughout the life of the case.

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Some Differences Between MBP and Other Kinds of Maltreatment

bulletThe varied ways cases can present
bulletUsual perpetrator characteristics
bulletUsual perpetrator-victim dynamics
bulletSuspicion indicators
bulletInitial and subsequent methods and activities of investigation
bulletExpertise and methodology to determine presence or absence of MBP maltreatment
bulletCourt preparation and presentation
bulletVictim risk assessment
bulletOut-of-home victim placement decision making
bulletDangers of victim placement with relatives and need for specialized relative evaluation
bulletSelecting and working with foster parents
bulletCase plan design and implementation
bulletVictim visitation and supervision
bulletTherapist selection and role
bulletOther short and long term victim protection and case management activities and issues

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MBP Situational Suspicion Indicators

  1. Difference between reported history and what is seen, or what makes sense physically or psychologically-behaviorally.
  2. Problem does not respond to treatment as expected.
  3. Problem appears to originate only in association with suspected perpetrator’s presence.
  4. Problem disappears or begins to improve when suspected victim is separated from suspected perpetrator.
  5. Problem resumes after suspected perpetrator is told suspected victim has recovered, is improving, or is soon to be released from the facility, program, course of treatment, etc. - OR problem resumes shortly after suspected victim goes home, treatment is discontinued, etc.
  6. Unexplained symptoms, illness, or death of other nuclear or extended family members.
  7. A pattern of "Usual MBP Perpetrator Characteristics".
  8. Suspected MBP perpetrator behavior that appears to be consistent with exaggeration and/or fabrication and/or induction of physical and/or psychological-behavioral problems in the suspected victim.

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Usual MBP Perpetrator Characteristics (Not to Be Considered a Profile)

bulletMBP perpetrators are usually mothers.
bulletMBP perpetrators usually present initially as "normal", "good" caretakers.
bulletMBP perpetrators are usually accomplished liars, deceivers, and manipulators - and extremely believable, convincing, and superb in their ability to give seemingly plausible reasons for their behavior.
bulletMBP perpetrators know what they are doing. They are not simply overanxious, overprotective caretakers.
bulletMBP perpetrators may have extensive health care knowledge - or they may not.
bulletMBP perpetrators usually deny all or part of the maltreatment they have perpetrated - even when there is extensive evidence.
bulletMBP perpetrators do not usually stop their MBP behavior when they are suspected or caught - but the behavior may change.
bulletMBP perpetrators may add or change health care providers, or "doctor shop" - or they may not.
bulletMBP perpetrators may have "normal" mental health evaluations - or there may be identified mental health pathology.
bulletMBP perpetrators may have a history of symptom/illness falsification with regard to themselves.
bulletMBP perpetrator-victim dynamics usually initially appear good - even excellent.
bulletMBP perpetrators often have no prior child protection agency involvement.
bulletMBP perpetrators should be considered even more dangerous once they believe they are suspected.
bulletMBP perpetrators use their victims as objects in trying to satisfy internal needs through the attention they receive from having a child with "problems". These needs are much more important to them than the needs of their victims. External gain may also be present.
bulletMBP perpetrators may seek attention from a variety of people - professionals and non-professionals.
bulletMBP perpetrators may have a "dramatic flair" or be involved in exciting or dramatic events.
bulletMBP perpetrators may change their maltreatment methods.

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MBP Confirmation-Disconfirmation Process

MBP is a recognized kind of maltreatment (abuse/neglect) - it is something someone does, NOT something someone "has" or "suffers from". It is behavior that one person deliberately perpetrates on another. For MBP to be confirmed, there must be:

(1) proof, through direct or circumstantial evidence (usually strong circumstantial evidence), that the suspected perpetrator has deliberately exaggerated and/or fabricated and/or induced a problem (physical and/or psychological-behavioral-mental health) regarding another person, and
(2) rationale that the behavior is consistent with MBP maltreatment, rather than something else.

There is no mental health test or evaluation that can rule MBP maltreatment in or out. There is no "profile" or combination of personal characteristics or traits that can determine whether someone is or is not an MBP perpetrator. The MBP confirmation-disconfirmation process involves the gathering and specialized evaluation of all possible information regarded suspected perpetrator(s), suspected victim(s), other children presently or formerly in the home - even if now adults or deceased, and sometimes others - depending on the case situation.

bulletMBP physical and emotional victim risk results from medical and mental health interventions as well as from actual symptoms/illness induced by the perpetrator.
bulletAlthough labeling a case MBP maltreatment may not be necessary in criminal cases, a confirmation of MBP maltreatment by or with the assistance of a credible MBP professional, and finding of MBP maltreatment in child protection courts, is extremely important. Child protection case plans must correspond to the kind of maltreatment that is confirmed. Appropriate MBP case plans include elements unique to MBP maltreatment - activities that must be successfully completed prior to consideration of reunification between victim and perpetrator, and other activities related to where the victim will live, other children in the home, contact between perpetrator and victim and potential victims, visitation with others, and other short and long term issues related to child protection.

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Last revised: 04/05/2004    

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