Abstract
Body dysmorphic disorder (BDD) is characterized by an excessive preoccupation with one or more perceived defects in appearance that are not observable or appear only as minor to others. It is also characterized by repetitive behaviors or mental acts in response to these perceived appearance flaws. Diagnostic criteria are met when these appearance concerns are not better explained by weight concerns and an associated eating disorder. BDD is associated with significant personal, social, and occupational impairment and often involves many unnecessary medical and surgical procedures. This chapter focuses on diagnosing body dysmorphic disorder, the differential diagnosis, comorbidities, and offers a brief introduction to various rating scales used to diagnose and manage BDD.
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Introduction
Body dysmorphic disorder (BDD) is a chronic and, often, severe condition. The severity of BDD lies along a spectrum, ranging from mild to life-threatening symptoms. It is often difficult to diagnose and can go unrecognized for many years. Those afflicted are often reluctant to reveal their concerns to others as many are ashamed of their appearance and/or the excessive focus they place on how they look [1, 2].
In 1980, BDD was first introduced in the psychiatric literature in the Diagnostic and Statistical Manual of Mental Disorders (DSM) by the American Psychiatric Association—DSM-III [3], as an atypical somatoform disorder. In the revised DSM-III, it was separately diagnosed in the somatoform disorder section [4]. Further changes were made in DSM-IV [5], which required the exclusion of another mental health disorder such as anorexia nervosa. It was still classified as a somatoform disorder. Changes from DSM-IV TR criteria mainly focus on the association of body dysmorphic disorder with obsessive–compulsive spectrum disorder. In the new DSM-V, BDD is now categorized under the obsessive–compulsive spectrum category, reflecting increasing evidence that these disorders are related [6]. See Fig. 7.1.
DSM-V Criteria for Body Dysmorphic Disorder [6]
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A.
Preoccupation with one or more perceived defects or flaws in physical appearance that are not observable or appear slight to others.
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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.
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C.
The preoccupation causes clinically significant distress or impairment in social, occupational, or other important areas of functioning.
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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.
In addition to the above diagnostic criteria, specifications are included to help diagnosing the disorder. First, it is to be specified if the person has muscle dysmorphia, which is a preoccupation that one’s body build is too small or insufficiently muscular [6]. This disorder occurs almost exclusively in males with normal or even muscular-appearing bodies [7]. The majority diet, exercise, lift weights, and some use anabolic steroids and take food supplements. Second, the degree of insight regarding the beliefs is to be specified. Insight ranges from good or fair (individual is able to recognize that BDD beliefs are definitely, probably, or may or may not be true), to poor (individual thinks that BDD beliefs are probably true), to absent insight with delusional beliefs (person is completely convinced that BDD beliefs are true) [6].
Diagnostic and Associated Features
As indicated by the diagnostic criteria, the first criterion of BDD involves the belief by an individual that she/he has one or more perceived flaw in physical appearance that appears unattractive, deformed, or in some other way abnormal. The flaws or deficits that brought attention to an afflicted individual are either not apparent or very slight to others. Although any body area can be of concern, the preoccupations most often focus on the skin, hair, or nose [7]. The concerns within these categories range widely and include acne, wrinkles, paleness, size and shape of nose, and both hair thinning or excessive hair growth. Disliked body parts are present simultaneously and sometimes sequentially, emerging in three typical patterns. Some are concerned with just one body part, some with one body part and then add new parts with time, and some have changing areas of concern [8]. These thoughts are difficult to control and can be quite time-consuming, occurring on an average 3–8 h per day [7].
The second criterion involves the performance of repetitive behaviors (e.g., mirror checking and skin picking) or mental acts (e.g., comparing oneself to another). These behaviors are also time-consuming and difficult to control. Although these behaviors may momentarily give the individual a brief relief, they are overall unwanted and not pleasurable. The most common of these features is mirror gazing, with about 80 % pathologically gazing at their reflection [9]. Mirrors dichotomously represent fear and hope [8]. These patients are driven by the desire to know exactly how they look and hope that they may look different. In a survey on mirror use, BDD patients were found to report a mean duration of an extended mirror session for 73 min while control participants for 21 min [9]. Skin-picking behavior is also very common in BDD patients; in a series of 123 patients, 27 % reported the behavior [10]. These types of compulsive behaviors can sometimes become very destructive, worsening a mild condition with ensuing infection and scars. Other time-consuming and repetitive tasks include excessive grooming and camouflaging, which can involve extensive hair styling, ritualized makeup application, touching of perceived defects, frequent change of clothing, and use of hats. These behaviors are aimed at improving the perceived deficits. For example, those with muscle dysmorphia may excessively exercise or lift weights. Some will excessively tan in hopes of improving pale skin or alternatively masking other perceived defects like wrinkles, brown spots, or acne. In addition to repetitive behaviors, those with BDD may also seek reassurance from others. They desire reassurance that they look okay, try to convince others of the reality of the ugliness, and request advice on how to improve the deficit [8]. Given that some patients with BDD will also excessively diet and exercise, BDD must be differentiated from eating disorders, such as anorexia nervosa and bulimia nervosa (Criterion D). In general, those with BDD will more likely be of normal weight and also have other body concerns.
These preoccupations along with repetitive acts are time-consuming and intrusive to these patients, which lead us to Criterion C. For a diagnosis of BDD, the preoccupations must cause clinically significant distress or impairment in social, occupational, or other important areas of functioning [6]. Impairment can range, but, on average, psychosocial functioning and quality of life are quite poor [7, 11]. Impairment can include missing school or work, avoidance of relationships and intimacy, and even becoming housebound or psychiatrically hospitalized [11, 12]. Increased severity of symptoms is associated with both poorer functioning in all realms of life and poorer quality of life [7].
Insight into beliefs can range from good to absent. Those with absent insight are delusional and are completely convinced that their appearance view is accurate. Delusions can also take the form of believing that others are taking special notice and mocking them because of the defects [11]. In those with BDD, insight is usually poor, with at least one third or more having delusional beliefs [13]. Those with delusional beliefs tend to be more resistant to therapy and often have greater morbidity.
Body dysmorphic by proxy refers to a form of BDD in which persons are preoccupied with defects that they perceive in another person’s appearance [6]. For example, a wife may think her husband is balding. In some cases, the person of concern will also start to worry about his/her own appearance [8]. In one case, a pregnancy termination was requested by a patient who believed that her child would be born with dysmorphic features [14].
Differential Diagnosis
Body dysmorphic disorder can be confused with other diagnoses including eating disorders, obsessive-compulsive related disorders, major depressive disorder, anxiety disorders, and psychotic disorders. Importantly, normal appearance is in the differential diagnosis.
Those with normal appearance concerns and/or clearly noticeable physical defects do not have BDD [6]. These people do not display the typical repetitive behaviors and have unimpaired functioning in society. Of note, skin picking can cause obvious physical defects [12]. BDD should be diagnosed if BDD-related skin picking is causing the perceptible appearance changes.
Eating disorders, such as anorexia nervosa and bulimia nervosa, cause individuals to have concerns about being overweight. Weight concerns may occur in BDD as well; however, BDD dissatisfaction often involves a broader extent of body areas, while those with eating disorders focus on weight and shape [13, 15, 16]. Eating disorders overall have a much higher female to male ratio than BDD. In addition, those with anorexia nervosa may feel more satisfied with weight loss, while people with BDD nearly always feel distressed [8]. Those with BDD will more likely be of normal weight and also have other body and appearance concerns. Those with BDD appear to have more negative self-evaluation and poorer functioning and quality of life [16, 17].
Anxiety, especially social anxiety, is also common in BDD patients. Social anxiety disorder is characterized by an excessive fear of social situations and embarrassment, avoidance, and introversion, many of these features which are shared with BDD [18–20]. In those with BDD, the anxiety is clearly due to appearance concerns and the belief that they will be ridiculed or rejected because of this. Social anxiety disorder tends to occur at a relatively earlier age of onset. Kelly et al. [21] reported that BDD patients are more likely to have obsessive–compulsive disorders, eating disorders, and psychotic disorders compared to patients with social anxiety disorder.
Patients with obsessive–compulsive-related disorders have symptoms that are not primarily focused on appearance and typically have more insight into their disorder than those with BDD [13], with 2 % having delusional beliefs compared with 27–60 % respectively [22–25]. Trichotillomania is a hair-pulling condition that is also an obsessive–compulsive-related disorder; however, if the hair removal is intended to improve appearance, than BDD is diagnosed. Depressive symptoms are quite common in those with BDD; however, BDD should be diagnosed if the criteria are met as outlined above [6]. Those with BDD often have delusional beliefs in that they are completely convinced that their ideas are correct. However, they typically do not display other symptoms of psychotic disorders such as auditory and visual hallucinations, disorganized thought, and other perceptual abnormalities. In addition, the delusions in individuals with BDD center on their body image. According to DSM-V, BDD should not be diagnosed if the preoccupation focuses on the belief that one emits a foul or offensive body odor. This is considered to be olfactory reference syndrome, which, to date, is not a DSM-V disorder [6].
Body Dysmorphic Disorder and Comorbidities
Associated comorbidity in BDD may include depression, anxiety, social phobia and avoidance, obsessive–compulsive disorder (OCD), skin picking, perfectionism, neuroticism, and substance abuse [26, 27]. Different models have proposed explanations for comorbidity among disorders, such as chance association (random co-occurrence), symptom nonspecificity, and shared etiology or pathophysiology. The latter may explain the high comorbidity of obsessive–compulsive disorder, anxiety, depression, social anxiety disorder, and eating disorders with BDD patients (Fig. 7.2).
The most common comorbid disorder is major depressive disorder, with lifetime comorbidity at 75–76 % [13, 15, 28]. A high proportion of BDD sufferers have comorbid lifetime OCD, approximately 32–33 % [13, 15, 28]. Patients with BDD and OCD have shared genetic, environmental, and phenotypic variables [29]. Both disorders are characterized by recurrent, time-consuming thoughts and ritualized behaviors [13]. Shared similarities include high levels of perfectionism and preferences for symmetry, repetitive checking behaviors, and avoidance of triggering situations [30]. Both have similar male to female ratios and average age of onset. Data also suggest close association between the two disorders on the basis of their response to pharmacologic treatments and is also supported by comorbidity and family studies [31].
Social anxiety disorder, or social phobia, is another common condition comorbid with BDD and should be carefully evaluated on the basis that both conditions are characterized by concerns for being negatively evaluated by others [18]. Comorbid lifetime social phobia is quite common, with lifetime rates at 37–39 % [15, 28]. Both conditions have similar gender distribution and history of suicide attempts.
A diagnostic and conceptual overlap has been reported between BDD and eating disorders, sharing distorted body image preoccupation concerns [16, 17]. Significant overlap between these two disorders has been emphasized in different studies. Data indicate that 12 % of inpatients with eating disorders have comorbid BDD and demonstrate high prevalence of dissatisfaction with non-weight-related body image [32]. Dyl et al. [33] reported that patients with significant weight/shape concerns also endorsed significantly more symptoms of depression, anxiety, and suicidality, as well as higher levels of dissociation, sexual concerns, and posttraumatic stress disorder symptomatology.
The lifetime prevalence of a comorbid substance use disorder is approximately 30–50 % [15, 28, 34]. The most commonly abused drugs are alcohol and cannabis. In one study, 68 % reported that BDD contributed to their substance use disorder.
Most patients with BDD are convinced and have delusional beliefs that they have physical deficits and people are watching and judging them. Very few patients have good insight about their disease. Recently in DSM-V, a specifier has been added that patients with BDD may present with a range of insight, from good, poor, to absent [6].
Scales Used for Body Dysmorphic Disorder
Multiple scales have been developed to help health professionals identify and measure BDD. Scales pertinent to dermatology, plastic surgery, and others who practice aesthetic medicine will be further discussed in greater detail later in this book. These include the Body Dysmorphic Disorder Questionnaire (BDDQ), Body Dysmorphic Disorder Questionnaire-Dermatology Version (BDDQ-DV), Body Dysmorphic Disorder Examination-Self Report (BDDE-SR), Body Dysmorphic Symptom Scale (BDSS), Dysmorphic Concern Questionnaire (DCQ), Cosmetic Procedure Screening Questionnaire (COPS), and Body Image Concern Inventory (BICI). Other scales include the Appearance Anxiety Inventory, BDD Dimensional Scale, Body Image Disturbance Questionnaire, Body Image Quality of Life Inventory, Brown Assessment of Beliefs Scale, and the Yale Brown Obsessive Compulsive Scale modified for BDD as briefly described below.
Appearance Anxiety Inventory (AAI)
This scale can be used to assess the progress of patients throughout therapy and in research for BDD. One study showed that it has the psychometric properties to determine whether changes in behaviors and cognitive processes can mediate the outcome following treatment in patients with BDD. The questionnaire has 10 items, and the score ranges from 0 to 40 [35].
BDD Dimensional Scale (BDD-D)
BDD-D is a self-report scale with only 5 items and a total score that ranges from 0 to 20. It can be used as a measure tool during therapy [36].
Brown Assessment of Beliefs Scale (BABS)
BABS is a widely used measure of assessing insight/delusionality in studies of BDD and OCD. In one study, this instrument was used in 327 subjects with BDD, and it was found to have strong interrater reliability, test–retest reliability, and internal consistency for the assessment of insight regarding appearance beliefs [40]. It is an observer-rated scale.
Yale Brown Obsessive Compulsive Scale Modified for BDD (BDD-YBOCS)
BDD-YBOCS is a 12-item scale with total scores that range from 0 to 48. This scale measures the severity of BDD symptoms and is rated by the observer [41].
Conclusion
Body dysmorphic disorder is a chronic and severe disorder that needs to be recognized amongst dermatologists, plastic surgeons, and those who provide aesthetic medicine and care. Patients with BDD have a preoccupation with an imagined or slight physical defect that causes clinically appreciable impairment in social, occupational, and/or other functioning. In addition, they exhibit repetitive behaviors or mental acts. In a small study of 59 dermatologists, 63 % were comfortable making a diagnosis of body dysmorphic disorder, and only 15 % of those queried believed that they could successively treat the disorder [42]. The correct diagnosis can be a challenge, as it may overlap or have similarities with other psychological conditions, such as depression, anxiety, eating disorders, social anxiety, and obsessive-compulsive disorders. In addition, for those with slight abnormalities and mild disease symptoms, it may be very difficult to decide if the preoccupation is considered disproportionate. The new DSM-V now includes BDD under the section of obsessive–compulsive-related disorders, reflecting the increasing body of evidence that these disorders are somehow linked. In addition, the delusional variant of BDD is no longer coded as both delusional disorder and BDD. Rather, it is now diagnosed with a specifier indicating degree of insight. Although there is no single diagnostic tool that has been universally accepted, many self-report questionnaires and rating scales exist and can be used in clinical or research settings to identify and measure BDD symptoms.
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Jafferany, M., França, K., Vashi, N. (2015). Diagnosis of Body Dysmorphic Disorder. In: Vashi, N. (eds) Beauty and Body Dysmorphic Disorder. Springer, Cham. https://doi.org/10.1007/978-3-319-17867-7_7
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