Delusional disorder in special populations

Delusional disorder in special populations

Delusional disorder in special populations

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Geriatric Delusions - Golden Years, Iron Beliefs

  • Onset & Demographics: Primarily a late-onset disorder, emerging after age >65 years. More common in women.
  • Core Features:
    • Types: Persecutory delusions are most common (e.g., theft, poison), followed by jealous types.
    • Risk Factors: Strongly associated with sensory impairment (hearing/vision loss), social isolation, and underlying cognitive decline.

⭐ Persecutory delusions in the elderly often manifest as fears of theft, poisoning, or harm from caregivers or neighbors, a theme known as 'delusional misidentification syndrome'.

  • Diagnostic Path:

Peripartum Psychosis - Baby Blues & Bizarre Beliefs

  • A medical emergency with rapid onset, typically within 2 weeks postpartum.
  • Presents a high risk of suicide and infanticide (up to 5%); requires immediate hospitalization.
  • Core Features:
    • Delusions are common, often mood-congruent and bizarre, frequently involving the infant (e.g., demonic possession, special powers).
    • Accompanied by hallucinations, mood swings, and severe confusion.
  • Strongly linked to an underlying bipolar disorder.
  • 📌 Psychosis Postpartum = Potential Peril (highlights the emergency).

⭐ The single greatest risk factor for postpartum psychosis is a personal history of bipolar disorder; these patients may have a 50-70% recurrence risk in subsequent pregnancies.

Isolated Minds - Echoes in the Silence

  • Underlying Principle: Isolation-sensory, social, or physical-can precipitate delusional disorder. Lacking external validation, the mind may generate a distorted reality.

  • Populations at Risk:

    • Sensory Deprivation: Significant hearing or vision loss.
    • Social/Cultural Isolation: Immigrants, refugees, and those with language barriers.
    • Physical Confinement: Prisoners, especially in solitary confinement.
  • Clinical Features:

    • Persecutory delusions are the most common theme.
    • Consider Shared Psychotic Disorder (Folie à Deux) in isolated dyads, where a delusion is transmitted.

⭐ In 'folie à deux,' the delusion in the secondary, more submissive person often resolves once they are separated from the primary, dominant individual with the original delusion.

Person peering through blinds, symbolizing isolation

  • In older adults, delusional disorder often presents with persecutory or somatic themes, frequently linked to sensory impairment or social isolation.
  • Postpartum psychosis can feature delusions about the infant, necessitating urgent assessment for safety.
  • Among immigrants and refugees, delusions may be culturally influenced or stem from past trauma.
  • Always rule out underlying medical conditions (e.g., dementia, delirium) or substance use as the primary cause.
  • Folie à deux (shared psychotic disorder) involves a delusion shared between two closely associated individuals.

Practice Questions: Delusional disorder in special populations

Test your understanding with these related questions

A 26-year-old man is brought to the emergency department by his wife because of bizarre and agitated behavior for the last 6 weeks. He thinks that the NSA is spying on him and controlling his mind. His wife reports that the patient has become withdrawn and at times depressed for the past 3 months. He lost his job because he stopped going to work 4 weeks ago. Since then, he has been working on an invention that will block people from being able to control his mind. Physical and neurologic examinations show no abnormalities. On mental status examination, he is confused and suspicious with marked psychomotor agitation. His speech is disorganized and his affect is labile. Which of the following is the most likely diagnosis?

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Flashcards: Delusional disorder in special populations

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Delusion disorder typically presents with _____ delusions

TAP TO REVEAL ANSWER

Delusion disorder typically presents with _____ delusions

non-bizarre ((bizarre or non-bizarre))

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