Munchausen’s syndrome
US /ˌmʌntʃaʊzənz ˈsɪndroʊm/
UK /ˌmʌntʃaʊzənz ˈsɪndroʊm/

1.
a psychiatric disorder in which an individual feigns or induces symptoms of illness in themselves for the purpose of gaining attention or sympathy
:
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The patient was diagnosed with Munchausen’s syndrome after repeatedly fabricating symptoms.
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It's a complex condition, and individuals with Munchausen’s syndrome often have a history of seeking medical attention.