1. OBSESSIVE-COMPULSIVE AND RELATED DISORDERS
Hakan Atalay
Yeditepe Üniversitesi
Tıp Fakültesi 1

2. OBSESSIVE-COMPULSIVE AND RELATED DISORDERS
* obsessive-compulsive disorder (OCD),
* body dysmorphic disorder,
* hoarding disorder,
* trichotillomania (hair-pulling disorder),
* excoriation (skin-picking disorder),
* substance/medication-induced obsessive-compulsive and related disorder,
* OCRD due to another medical condition, and
* other specified OCRD and unspecified OCRD (e.g., body-focused repetitive behavior disorder, obsessional jealousy). 2

3. OBSESSIVE-COMPULSIVE AND RELATED DISORDERS
OCD is characterized by the presence of obsessions and compulsions.
Obsessions are recurrent and persistent thoughts, urges, or images that are experienced as intrusive and unwanted.
Compulsions are repetitive behaviors or mental acts that an individual feels driven to perform in response to an obsession or according to rules that must be applied rigidly. 3

4. OBSESSIVE-COMPULSIVE AND RELATED DISORDERS
Some other OCRDs are also characterized by preoccupations and by repetitive behaviors or mental acts in response to the preoccupations. Other OCRDs are characterized primarily by recurrent body-focused repetitive behaviors (e.g., hair pulling, skin picking) and repeated attempts to decrease or stop behaviors. 4

5. The OCRDs differ from developmentally normative preoccupations and rituals but being excessive or persisting beyond developmentally appropriate periods.
The distinction between the presence of subclinical symptoms and a clinical disorder requires assessment of a number factors, including the individual’s level of distress and impairment in functioning. 5

6. Certain symptom dimensions are common in OCD, including
* those of cleaning (contamination obsessions and cleaning compulsions);
* symmetry (symmetry obsessions and repeating, ordering, and counting compulsions);
* forbidden or taboo thoughts (e.g., aggressive, sexual, and religious obsessions and related compulsions); and
* harm (e.g., fears of harm to oneself or others and related checking compulsions). 6

7. In each of these disorders, insight ranges from “good or fair insight” to “poor insight” to “absent insight/delusional beliefs” with respect to disorder related beliefs.
For individuals whose OCRD symptoms warrant the “with absent insight/delusional belief” specifier, these symptoms should not be diagnosed as a psychotic disorder. 7

8. OBSESSIVE-COMPULSIVE DISORDER Diagnostic Criteria
A. Presence of obsessions, compulsions, or both:
Obsessions are defined by (1) and (2):
1. Recurrent and persistent thoughts, urges, or images that are experienced, at some time during the disturbance, as intrusive and unwanted, and that in most individuals cause marked anxiety or distress.
2. The individual attempts to ignore or suppress such thoughts, urges, or images, or to neutralize them with some other thought or action (i.e., by performing a compulsion). 8

9. Compulsions are defined by (1) and (2):
1. Repetitive behaviors (e.g., hand washing, ordering, checking) or mental acts (e.g., praying, counting, repeating words silently) that the individual feels driven to perform in response to an obsession or according to rules that must be applied rigidly.
2. The behaviors or mental acts are aimed at preventing or reducing anxiety or distress, or preventing some dreaded event or situation; however, these behaviors or mental acts are not connected in a realistic way with what they are designed to neutralize or prevent, or are clearly excessive. 9

10. OCD Diagnostic Criteria (cont’d)
B. The obsessions or compulsions are time- consuming (e.g., take more than 1 hour per day) or cause clinically significant distress or impairment in social, occupational, or other important areas of functioning.
C. The obsessive-compulsive symptoms are not attributable to the physiological effects of a substance (e.g., a drug of abuse, a medication) or another medical condition. 10

11. OCD Diagnostic Criteria (cont’d)
D. The disturbance is not better explained by the symptoms of another mental disorder (e.g., excessive worries, as in generalized anxiety disorder, preoccupation with appearance, as in body dysmorphic disorder; difficulty discarding or parting with possessions, as in hoarding disorder; hair pulling, as in trichotillomania [hair-pulling disorder]; skin picking, as in excoriation [skin- picking disorder]; stereotypes, as in stereotypic movement disorder; ritualized eating behavior, as in eating disorders; preoccupation with substances or gambling, as in substance-related and addictive disorders; preoccupation with having an illness, as in illness anxiety disorder; sexual urges of fantasies, as in paraphilic disorders; impulses, as in disruptive, impulse-control, and conduct disorders; guilty ruminations, as in major depressive disorder; thought insertion or delusional preoccupations, as in schizophrenia spectrum and other psychotic disorders; or repetitive patterns of behavior, as in autism spectrum disorder). 11

12. OBSESSIVE-COMPULSIVE AND RELATED DISORDERS
Specify if:
With good of fair insight: The individual recognizes that obsessive-compulsive disorder beliefs are definitely or probably not true or that may or may not be true.
With poor insight: The individual thinks obsessive- compulsive disorder beliefs are probably true.
With absent insight/delusional beliefs: The individual is completely convinced that obsessive-compulsive disorder beliefs are true. 12

13. OBSESSIVE-COMPULSIVE AND RELATED DISORDERS
Specify if:
Tic-related: The individual has a current or past history of a tic disorder. 13

14. BODY DYSMORPHIC DISORDER
A. Preoccupation with one or more perceived defects or flaws in physical appearance that are not observable or appear slight to others.
B. At some point during the course of the disorder, the individual has performed repetitive behaviors (e.g., mirror checking, excessive grooming, skin picking, reassurance seeking) or mental acts (e.g., comparing his or her appearance with that of others) in response to the appearance concerns.
C. The preoccupation causes clinically significant distress or impairment in social, occupational, or other important areas of functioning.
D. The appearance preoccupation is not better explained by concerns with body fat or weight in an individual whose symptoms meet diagnostic criteria for an eating disorder. 14

15. BODY DYSMORPHIC DISORDER
Specify if:
With muscle dysmorphia: The individual is preoccupied with the idea that his or her body build is too small or insufficiently muscular. This specifier is used even if the individual is preoccupied with other body areas, which is often the case.
Indicate degree of insight regarding body dysmorphic disorder beliefs (e.g., “I look ugly” or “I look deformed”).
With good or fair insight: The individual recognizes that the body dysmorphic disorder beliefs are definitely or probably not true or that they may or may not be true.
With poor insight: The individual thinks that the body dysmorphic disorder beliefs are probably true.
With absent insight/delusional beliefs: The individual is completely convinced that the body dysmorphic disorder beliefs are true. 15

16. HOARDING DISORDER
A. Persistent difficulty discarding or parting with possessions, regardless of their actual value.
B. This difficulty is due to a perceived need to save the items and to distress associated with discarding them.
C. The difficulty discarding possessions results in the accumulation of possessions that congest and clutter active living areas and substantially compromises their intended use. If living areas are uncluttered, it is only because of the interventions of third parties (e.g., family members, cleaners, authorities). 16

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18. HOARDING DISORDER
C. The hoarding causes clinically significant distress or impairment in social, occupational, or other areas of functioning (including maintaining a safe environment for self and others).
D. The hoarding is not attributable to another medical condition (e.g., brain injury, cerebrovascular disease, Prader-Willi syndrome).
E. The hoarding is not better explained by the symptoms of another mental disorder (e.g., obsessions in OCD, decreased energy in major depressive disorder, delusions in schizophrenia or another psychotic disorder, cognitive deficits in major neurocognitive disorder, restricted interest in autism spectrum disorder. 18

19. HOARDING DISORDER Specify if:
With excessive acquisition: If difficulty discarding possessions is accompanied by excessive acquisition of items that are not needed or for which there is no available space.
With good of fair insight: The individual recognizes that hoarding-related beliefs and behaviors (pertaining to difficulty discarding items, clutter, or excessive acquisition) are problematic.
With poor insight: The individual is mostly convinced that hoarding-related beliefs and behaviors (pertaining to difficulty discarding items, clutter, or excessive acquisition) are not problematic despite evidence to the contrary.
With absent insight/delusional beliefs: The individual is completely convinced that hoarding-relate beliefs and behaviors (pertaining to difficulty discarding items, clutter, or excessive acquisition) are not problematic despite evidence to the contrary. 19

20. TRICHOTILLOMANIA (HAIR-PULLING DISORDER)
A. Recurrent pulling out of one’s hair, resulting in hair loss.
B. Repeated attempts to decrease or stop hair pulling
C. The hair pulling causes clinically significant distress or impairment in social, occupational, or other important areas of functioning.
D. The hair pulling or hair loss is not attributable to another medical condition (e.g., a dermatological condition).
E. The hair pulling is not better explained by the symptoms of another mental disorder (e.g., attempts to improve a perceived defect or flaw in appearance in body dysmorphic disorder). 20

21. EXCORIATION (SKIN-PICKING DISORDER)
A. Recurrent skin picking resulting in skin lesions.
B. Repeated attempts to decrease or stop skin picking.
C. The skin picking causes clinically significant distress or impairment in social, occupational, or other important areas of functioning.
D. The skin picking is not attributable to the physiological effects of a substance (e.g., cocaine) or another medical condition (e.g., scabies).
E. The skin picking is not better explained by the symptoms of another mental disorder (e.g., delusions or tactile hallucinations in a psychotic disorder, attempts to improve a perceived defect or flaw in appearance in body dysmorphic disorder, stereotypes in stereotypic movement disorder, or intention to harm oneself in nonsuicidal self-injury). 21

22. SUBSTANCE/MEDICATION-INDUCED OBSESSIVE-COMPULSIVE AND RELATED DISORDER
A. Obsessions, compulsions, skin picking, hair pulling, other body- focused repetitive behaviors, or other symptoms characteristic of the obsessive-compulsive and related disorders predominate in the clinical picture.
B. There is evidence from the history, physical examination, or laboratory findings of both (1) and (2):
1) The symptoms in Criterion A developed during or soon after substance intoxication or withdrawal or after exposure to a medication.
2) The involved substance/medication is capable of producing the symptoms in Criterion A. 22

23. SUBSTANCE/MEDICATION-INDUCED OBSESSIVE-COMPULSIVE AND RELATED DISORDER
C. The disturbance is not better explained by an obsessive-compulsive and related disorder that is not substance/medication-induced. Such evidence of an independent obsessive-compulsive and related disorder could include the following:
The symptoms precede the onset of the substance/medication use; the symptoms persist for a substantial period of time (e.g., about 1 month) after the cessation of acute withdrawal or severe intoxication; or there is other evidence suggesting the existence of an independent non-substance/medication-induced obsessive- compulsive and related disorder (e.g., a history of recurrent non- substance/medication-related episodes). 23

24. SUBSTANCE/MEDICATION-INDUCED OBSESSIVE-COMPULSIVE AND RELATED DISORDER
D. The disturbance does not occur exclusively during the course of a delirium.
E. The disturbance causes clinically significant distress or impairment in social, occupational, or other important areas of functioning. 24

25. C. The disturbance is not better explained by another mental disorder.
OBSESSIVE-COMPULSIVE AND RELATED DISORDER DUE TO ANOTHER MEDICAL CONDITION
A. Obsessions, compulsions, preoccupations with appearance, hoarding , skin picking, hair pulling, other body-focused repetitive behaviors, other symptoms characteristic of obsessive-compulsive and related disorder predominate in the clinical picture.
B. There is evidence from the history, physical examination, or laboratory findings that the disturbance is the direct pathophysiological consequence of another medical condition.
C. The disturbance is not better explained by another mental disorder.
D. The disturbance does not occur exclusively during the course of a delirium.
E. The disturbance causes clinically significant distress or impairment in social, occupational, or other important areas of functioning. 25

26. OBSESSIVE-COMPULSIVE AND RELATED DISORDER DUE TO ANOTHER MEDICAL CONDITION
Specify if:
With obsessive-compulsive disorder-like symptoms: If obsessive- compulsive disorder-like symptoms predominate in the clinical presentation.
With appearance preoccupations: If preoccupation with perceived appearance defects or flaws predominates in the clinical presentation.
With hoarding symptoms: If hoarding predominates in the clinical presentation.
With hair-pulling symptoms: If hair pulling predominates in the clinical presentation.
With skin-picking symptoms: If skin picking predominates in the clinical presentation. 26

27. OTHER SPECIFIED OBSESSIVE-COMPULSIVE AND RELATED DISORDER
This category applies to presentations in which symptoms characteristic of an OCRD that cause clinically significant distress or impairment in social, occupational, or other important areas of functioning predominate but do not meet the full criteria for any of the disorders in the obsessive- compulsive and related disorders diagnostic class.
The other specified OCRD category is used in situations in which the clinician chooses to communicate the specific reason that the presentation does not meet the criteria for any specific OCRD. 27

28. OTHER SPECIFIED OBSESSIVE-COMPULSIVE AND RELATED DISORDER
Body dismorphic-like disorder with acute flaws: This is similar to body dysmorphic disorder except that the defects or flaws in physical appearance are clearly observable by others (i.e., they are noticeable than “slight”). In such cases, the preoccupation with these flaws is clearly excessive and causes significant impairment or distress.
Body dysmorphic-like disorder without repetitive behaviors: Presentations that meet body dysmorphic disorder except that the individual has not performed repetitive behaviors or mental acts in response to the appearance concerns.
Body-focused repetitive behavior disorder: This is characterized by recurrent body- focused repetitive behaviors (e.g., nail biting, lip biting, cheek chewing) and repeated attempts to decrease or stop the behaviors. These symptoms cause clinically significant distress or impairment in social, occupational, or other important areas of functioning and are not better explained by trichotillomania (hair-pulling disorder), excoriation (skin-picking) disorder, stereotypic movement disorder, or nonsuicidal self-injury. 28

29. OTHER SPECIFIED OBSESSIVE-COMPULSIVE AND RELATED DISORDER
Obsessional jealousy: This is characterized by nondelusional preoccupation with a partner’s perceived infidelity. The preoccupations may lead to repetitive behaviors or mental acts in response to the infidelity concerns; they cause clinically significant distress or impairment in social, occupational, or other important areas of functioning; and they are not better explained by another mental disorder such as delusional disorder, jealous type, or paranoid personality disorder.
Shubo-kyofu: A variant of taijin kyofusho that is similar to body dysmorphic disorder and is characterized by excessive fear of having a bodily deformity.
Koro: Related to dhat syndrome, an episode of sudden and intense anxiety that the penis (or the vulva and nipples in females) will recede into the body, possibly leading to death.
Jikoshu-kyofu: A variant of taijin kyofusho characterized by fear of having an offensive body odor (also termed olfactory reference syndrome). 29

30. UNSPECIFIED OBSESSIVE-COMPULSIVE AND RELATED DISORDER
This category applies to presentations in which symptoms characteristic of an obsessive-compulsive and related disorder that cause clinically significant distress or impairment in social, occupational, or other important areas of functioning predominate but do not meet the full criteria for any of the disorders in the OCRDs diagnostic class.
The unspecified OCRD category is used in situations in which the clinician chooses not to specify the reason that the criteria are not met for a specific OCRD, and includes presentations in which there is insufficient information to make a more specific diagnosis (e.g., in emergency room settings). 30