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Munchausen Syndrome by Proxy - Topic Overview

What is Munchausen syndrome by proxy?

Munchausen syndrome by proxy (MSBP) is a mental health problem in which a caregiver makes up or causes an illness or injury in a person under his or her care, such as a child, an elderly adult, or a person who has a disability. Because vulnerable people are the victims, MSBP is a form of child abuse or elder abuse.

Note: Since most cases of MSBP are between a caregiver (usually a mother) and a child, the rest of this topic will describe that relationship. But it is important to remember that MSBP can involve any vulnerable person who has a caregiver.

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The caregiver with MSBP may:

  • Lie about the child's symptoms.
  • Change test results to make a child appear to be ill.
  • Physically harm the child to produce symptoms.

Victims are most often small children. They may get painful medical tests they don't need. They may even become seriously ill or injured or may die because of the actions of the caregiver.

Children who are victims of MSBP can have lifelong physical and emotional problems and may have Munchausen syndrome as adults. This is a disorder in which a person causes or falsely reports his or her own symptoms.

What causes Munchausen syndrome by proxy?

Doctors aren't sure what causes it, but it may be linked to problems during the abuser's childhood. Abusers often feel like their life is out of control. They often have poor self-esteem and can't deal with stress or anxiety.

The attention that caregivers get from having a sick child may encourage their behavior. Caregivers may get attention not only from doctors and nurses but also from others in their community. For example, neighbors may try to help the family in many ways—such as by doing chores, bringing meals, or giving money.

How does someone with Munchausen syndrome by proxy act?

A person with MSBP often:

  • Has medical skills or experience.
  • Seems devoted to his or her child.
  • Looks for sympathy and attention.
  • Tries too hard to become close and friendly with medical staff.
  • Needs to feel powerful and in control.
  • Does not see his or her behavior as harmful.
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