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Cluster C Personality DisorderAka: Anxious Personality Disorder, Avoidant Personality, Obsessive Compulsive Personality, Dependent Personality

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  1. Definition
    1. Anxious or fearful personalities
  2. General features of all Cluster C personalities
    1. Isolation
      1. Orderly
      2. Controlled
      3. Anxious
      4. Remembers truth with affect
      5. Compulsive or Obsessive-Compulsive
    2. Passive-Aggression
      1. Self-chosen failure
      2. Masochistic
      3. Dysthymic
  3. Type: Avoidant Personality (common)
    1. Characteristics
      1. Socially inhibited, shy and lonely
      2. Sense of being inadequate with low self esteem
      3. Hypersensitive to criticism
      4. Desperate for relationships
        1. But avoid social contact for fear of disapproval
    2. Altered interpretation of illness and physician
      1. Not forthcoming with information
      2. Will not question or disagree with doctor
    3. Recommended physician approach
      1. Reassure and validate concerns
      2. Encourage talking about concerns in future
  4. Type: Obsessive Compulsive Personality
    1. Characteristics (often successful men)
      1. Inhibited, stubborn, rigid and a perfectionist
      2. Preoccupied with orderliness or perfection
      3. Mental and interpersonal control
      4. Worry about loss of emotional control
    2. Altered interpretation of illness and physician
      1. Prolongs illness behavior to obtain attention
      2. Demands urgent attention
    3. Recommended physician approach
      1. Reassure
      2. See in clinic regularly (set limits on availability)
      3. Identify support network to assist patient
      4. Avoid rejecting patient
  5. Type: Dependent Personality
    1. Characteristics (more common in women)
      1. Need to be taken care of, passive, unsure
      2. Submissive behavior
      3. Fear of separation
      4. Sensation of helplessness
      5. May appear passive-aggressive
    2. Altered interpretation of illness and physician
      1. Exhaustive questioning
      2. Attention to minute detail
      3. Angry when routines are disrupted
    3. Recommended physician approach
      1. Careful history and examination
      2. Thorough explanations
      3. Do not emphasize uncertainty
      4. Involve patient in treatment program
    4. Evaluate for comorbid conditions
      1. Anxiety Disorder
      2. Major Depression
  6. Management
    1. Target symptoms
      1. Anxiety
      2. Behavior
      3. Obsessions
    2. Medications
      1. SSRIs
      2. Consider Benzodiazepine for short-term use
  7. References
    1. Ward (2004) Am Fam Physician 70(8):1505
    2. Tomb (1992) Psychiatry, p. 147-52

Avoidant Personality Disorder (C0004444)

ConceptsMental or Behavioral Dysfunction (T048)
ICD9301.82
MSHD010554
EnglishAvoidant personality, AVOIDANT PERSONALITY DIS, Avoidant Personality Disorder, Avoidant Personality Disorders
Spanishtrastorno de la personalidad por evitacion
Parent ConceptsOther personality disorder NOS (C0029707), Cluster C personality disorder (C0009087), Duplicate concept (C1274013)
SourcesAOD, ICD9CM, MSH, OMIM, SCTSPA, SNOMEDCT
Derived from the NIH UMLS (Unified Medical Language System)



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