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Table 1 Diagnostic and Statistical Manual of Mental Disorders 5th Edition diagnostic criteria for somatic symptom and related disorders

From: How to recognize and manage psychosomatic pain in the pediatric emergency department

Somatic Symptom Disorders and Related Disorders
Somatic Symptom Disorder:
 - One or more somatic symptoms
 - Excessive thoughts, feelings, or behaviors related to the somatic symptoms or other associated symptoms such as excessing thoughts regarding the seriousness of symptoms, anxiety about the symptoms, or excess time and energy devoted toward the symptoms.
 - The patient is persistently symptomatic and the somatic symptoms may change over time (typical duration of 6 months)
 - Specifiers: with predominant pain, persistent, mild, moderate, severe
Illness Anxiety Disorder:
 - Preoccupation with having or acquiring illness
 - Somatic symptoms are either mild or not illness:
  - If a medical condition is present or there is a high risk of a medical condition, the preoccupation is excessive and disproportionate to the risk of illness
  - High level of anxiety about health
  - Performs excessive health-related behaviors or maladaptive avoidance
  - Preoccupation with illness lasting at least 6 months, although the specific illness that is feared may change over that time
  - Specifiers: care-seeking type, care-avoidant type
Functional Neurologic Symptom Disorder (Conversion Disorder):
 - At least one symptom of altered voluntary motor or sensory function
 - Clinical findings are incompatible with patient clinical presentation
 - Specifiers:
  - with weakness/paralysis
  - with abnormal movement
  - with swallowing symptoms
  - with speech symptom
  - with attacks/seizures
  - with anesthesia/sensory loss
  - with special sensory symptom
  - with mix symptom
  - acute episode (< 6 months), persistent (> 6 months)
  - with psychological stressor, without psychological stressor
Psychological Factors affecting General Medical Condition:
 - Presence of medical condition
 - Psychological or behavioral factors adversely affect the medical condition by potentially (1) interfering with treatment, (2) increasing health risk, (3) influencing underlying pathophysiology, and/or (4) close temporal association between these factors and exacerbation of illness
 - Specifiers: mild, moderate, severe, extreme
Factitious Disorder:
 - Falsification of physical or psychological signs or symptoms associated with identified deception
 - Presents self to others as ill
 - Deceptive behavior can be present without identified external gains
 - Specifiers: single episode, recurrent episode, imposed on self or imposed on other
Shared features:
 - Not better explained by another mental disorder or physical health condition
 - Symptoms cause significant impairment and/or distress