ED00 - Factitious Disorder of the Skin: Complete ICD-11 Coding Guide

1. Introduction

Factitious disorder of the skin represents a complex diagnostic challenge in contemporary dermatological and psychiatric practice. This condition is characterized by the deliberate or semi-intentional production of self-inflicted cutaneous lesions, which may assume diverse and frequently bizarre forms, challenging the clinical expertise of healthcare professionals. Unlike other dermatoses with clear etiology, factitious lesions are created by the patient themselves through mechanical, chemical, or thermal means, although the level of awareness regarding this behavior may vary significantly.

The clinical importance of this disorder transcends simple dermatological manifestation, frequently representing a somatic expression of underlying psychological suffering. Patients with factitious disorder of the skin may present with significant psychiatric comorbidities, including personality disorders, depression, anxiety, or unresolved trauma. The exact prevalence remains uncertain due to the hidden nature of the behavior and patients' reluctance to admit self-induction of lesions, but clinical studies suggest that this condition is more common than initially recognized in specialized dermatology services.

The impact on public health is considerable, involving high costs related to extensive diagnostic investigations, ineffective treatments, unnecessary hospitalizations, and avoidable invasive procedures. Furthermore, the patient's emotional suffering and the strain on medical teams facing refractory and confusing cases amplify the relevance of this diagnosis.

Correct coding using the ED00 code from ICD-11 is absolutely critical for various purposes: it enables appropriate epidemiological tracking, facilitates proper referral to mental health services, avoids unnecessary investigations and treatments, aids in health resource planning, and ensures accurate documentation for legal and administrative purposes. The correct identification of this condition may be the turning point for the patient to finally receive the psychological or psychiatric treatment they truly need.

2. Correct ICD-11 Code

Code: ED00

Description: Factitious disorder of the skin

Parent category: Self-inflicted skin conditions

Official definition: Factitious diseases of the skin encompass a diverse range of self-inflicted skin lesions that are produced by mechanical means or by the application or injection of chemical or caustic irritants. They may simulate other dermatoses, but generally have a distinct, geometric, and bizarre configuration that cannot be explained otherwise.

This code represents a significant evolution in the classification of dermatological conditions with a behavioral component. ICD-11 explicitly recognizes the self-inflicted nature of these lesions, positioning them appropriately within the spectrum of self-induced skin conditions. This categorization reflects the modern understanding that these lesions are not merely dermatological, but represent complex manifestations involving integrated psychological, behavioral, and dermatological aspects.

Code ED00 applies specifically to situations where lesions are produced by the individual themselves, present unusual or bizarre morphological characteristics, do not correspond to typical patterns of known dermatoses, and frequently appear in areas accessible to the patient's hands. Geometric configuration, angular edges, peculiar distribution, and atypical evolution are key elements that guide this diagnosis. It is fundamental to understand that this code does not necessarily imply full awareness or intentionality on the patient's part regarding the production of lesions, thus differentiating itself from conscious malingering behaviors.

3. When to Use This Code

The code ED00 should be used in specific clinical scenarios where there is clear evidence or strong suspicion of self-inflicted skin lesions with particular characteristics. Below, we present detailed practical situations:

Scenario 1: Lesions with unexplainable geometric morphology A 28-year-old female patient presents with multiple ulcerated lesions on the anterior surface of the forearms and thighs, all with perfect linear or angular shape, well-defined borders, and uniform depth. The lesions appear exclusively in areas easily accessible by the hands. Extensive investigations for infectious, autoimmune, or metabolic causes were negative. The patient denies manipulation, but the lesions heal rapidly when the area is covered with occlusive dressings. This bizarre morphological pattern and the response to occlusion strongly suggest self-induction, justifying the use of code ED00.

Scenario 2: Refractory dermatosis with atypical course A 35-year-old male patient with a history of multiple dermatological consultations presents with recurrent lesions that do not respond to conventional treatments. The lesions appear in flares, always in uncommon configurations, and frequently new lesions emerge during periods of documented emotional stress. Skin biopsies show only nonspecific alterations compatible with mechanical or chemical trauma. The distribution completely spares the back and other inaccessible areas. Code ED00 is appropriate when all organic causes have been reasonably excluded.

Scenario 3: Lesions with characteristics of localized chemical burn A 16-year-old adolescent develops areas of superficial skin necrosis with extremely demarcated borders, suggesting localized application of caustic substance. The lesions appear in patterns that do not correspond to accidental or occupational exposures. Psychological evaluation reveals significant emotional difficulties and self-harm behaviors in other forms. The deliberate nature of the chemical application, even if partially unconscious, indicates the use of code ED00.

Scenario 4: Deep excoriations with pattern of repetitive manipulation A patient presents with multiple deep excoriations and ulcerations in different stages of healing, all located in accessible areas. The lesions show evidence of repetitive manipulation with instruments or nails, with irregular but clearly traumatic borders. Unlike excoriation disorder (skin picking), these lesions are deeper, more extensive, and present characteristics suggesting the use of objects beyond the nails. Code ED00 is appropriate when there is intentional production of significant lesions beyond simple compulsive excoriation.

Scenario 5: Skin lesions associated with injection of foreign substances A patient develops painful subcutaneous nodules, areas of induration, and ulceration secondary to self-injection of various substances (saliva, feces, chemical substances). Histopathological examinations reveal foreign body reaction and exogenous material. The clinical history and investigation reveal that the patient himself performed the injections. This self-induction behavior through injection of irritants fully justifies code ED00.

Scenario 6: Factitious dermatitis with documented psychiatric component A patient with documented borderline personality disorder presents with recurrent skin lesions that temporally coincide with emotional crises or interpersonal conflicts. The lesions vary in presentation but consistently show artifactual characteristics. There is evidence that the production of lesions serves a specific psychological function (obtain attention, express suffering, self-punish). Code ED00 adequately captures this dermatology-psychiatry interface.

4. When NOT to Use This Code

It is essential to distinguish factitious skin disorder from other conditions with similar presentation but different etiology or intentionality:

Exclusion 1: Skin Picking Disorder - Code 726494117 Do not use ED00 when the patient presents with compulsive and repetitive behavior of pinching, scratching, or picking at the skin, but without deliberate production of extensive or bizarre lesions. Skin picking disorder is characterized by an irresistible urge to manipulate real or perceived skin irregularities, resulting in multiple superficial excoriations, typically on the face, but without the intentional creation of deep lesions or geometric patterns. The main difference lies in the compulsive nature versus the more deliberate production (even if semi-conscious) of factitious lesions.

Exclusion 2: Factitious Disorders - Code 430567349 Code ED00 should not be used when there is clear evidence that the patient is consciously fabricating or exaggerating symptoms with the primary objective of assuming the sick role, without obvious external gains. In factitious disorders, the motivation is internal (psychological need to be seen as ill), and there is frequently a pattern of deceiving multiple professionals, fabricating elaborate medical histories, or even inducing lesions in other people (factitious disorder imposed on another). When manipulation involves broader aspects beyond the skin lesions themselves, the factitious disorder code may be more appropriate.

Exclusion 3: Conscious Malingering - Code 1136473465 Do not use ED00 when there is evidence that the patient is consciously feigning or producing lesions with clear external objectives, such as obtaining financial compensation, avoiding legal responsibilities, obtaining controlled medications, or other explicit secondary gains. In malingering, the motivation is external and identifiable, and the behavior ceases when the objective is achieved or when there is no longer an audience. This distinction is critical for legal and administrative purposes.

Exclusion 4: Organic Dermatoses with Secondary Manipulation When a patient has a legitimate organic dermatosis (such as psoriasis, atopic dermatitis, or acne) and secondarily manipulates the lesions, worsening them, the primary code should reflect the underlying disease. Secondary manipulation may be documented additionally, but ED00 is not the primary code when there is clear underlying cutaneous pathology.

Exclusion 5: Non-suicidal Self-Injury with Non-dermatological Focus When self-injurious behavior (such as superficial cutting) is part of a broader non-suicidal self-injury disorder with multiple forms of expression and the focus is not specifically on the production of dermatosis, other codes related to self-injurious behaviors may be more appropriate. Code ED00 is specific for situations where the cutaneous manifestation is the central element of the clinical presentation.

5. Step-by-Step Coding Process

Step 1: Assess diagnostic criteria

Confirmation of the diagnosis of factitious disorder of the skin requires systematic and multidisciplinary evaluation. First, perform a thorough dermatological examination documenting: lesion morphology (shape, depth, borders), anatomical distribution (accessibility to the patient's hands), temporal pattern (relationship with stressful events), and response to previous treatments.

Essential instruments include: serial dermatological photography to document progression, skin biopsy when indicated (generally shows only nonspecific changes or trauma-compatible findings), occlusion testing (covering the area with impermeable dressings frequently results in healing), and formal psychological or psychiatric evaluation to identify comorbidities and underlying motivations.

Key criteria to confirm: presence of skin lesions, evidence of self-induction (direct or circumstantial), atypical or bizarre morphology that does not correspond to known dermatoses, reasonable exclusion of organic causes through appropriate investigation, and frequently (but not always) presence of underlying psychopathology.

Step 2: Verify specifiers

Although code ED00 does not have extensive formal specifiers in ICD-11, it is important to document: severity (extent of lesions, functional impairment, psychosocial impact), duration (acute versus chronic), temporal pattern (episodic versus continuous), methods used (mechanical, chemical, thermal, injection), and patient's level of insight (admits versus completely denies self-induction).

Also document the presence of: psychiatric comorbidities (depression, anxiety, personality disorders), identifiable psychosocial stressors, history of trauma or abuse, and response to previous interventions. This information, although not changing the primary code, is crucial for therapeutic planning and prognosis.

Step 3: Differentiate from other codes

ED01: Factitious disorder imposed on self with predominantly psychological signs and symptoms The key difference lies in intentionality and motivation. ED01 is used when there is conscious and deliberate fabrication of skin symptoms with clear external gains (financial, legal, evasion of responsibilities). In ED00, the motivation is predominantly internal and psychological, and the level of consciousness may be partial or fluctuating. If the patient is clearly feigning to obtain identifiable external benefits, use ED01. If there is genuine psychological distress and the production of lesions serves a complex emotional function, use ED00.

ED02: Painful bruising syndrome This is a specific condition characterized by painful ecchymoses (bruises) that appear spontaneously, frequently in women, and may have a self-induced component but with very particular clinical characteristics. The main difference lies in the presentation: ED02 refers specifically to painful ecchymoses with a characteristic pattern, while ED00 encompasses a broader spectrum of factitious lesions (ulcers, burns, excoriations). If the presentation is exclusively of recurrent painful ecchymoses, consider ED02; if there is a variety of lesion types or non-ecchymotic lesions, ED00 is more appropriate.

Step 4: Required documentation

Checklist of mandatory information for adequate recording:

• Detailed description of lesions (morphology, size, location, number)
• Clinical photography when possible and with consent
• Chronology of lesion appearance and evolution
• Previous treatments performed and responses obtained
• Results of complementary investigations (laboratory tests, biopsies, cultures)
• Mental health evaluation performed or scheduled
• Evidence supporting the diagnosis of self-induction
• Patient's level of insight and attitude toward the diagnosis
• Identified medical and psychiatric comorbidities
• Integrated therapeutic plan (dermatological and psychological/psychiatric)
• Clear justification for code ED00 versus differential diagnoses considered

Record objectively and non-judgmentally, avoiding language that may stigmatize the patient. Remember that this documentation may have medicolegal implications and should reflect a professional and compassionate approach.

6. Complete Practical Example

Clinical Case:

A 24-year-old female patient, university student, presents to dermatology consultation referred by a general practitioner due to "skin wounds that have not healed for six months". She reports that the lesions initially appeared on the left forearm as "small blisters" that evolved into ulcers. Subsequently, similar lesions appeared on both forearms and thighs.

On physical examination: multiple superficial to moderately deep ulcers, ranging from 1 to 4 cm in diameter, with well-demarcated geometric borders and angular edges. Some lesions present linear shape, others perfect circular form. All lesions are located in areas easily accessible to the hands. There are no lesions on the back, scalp, or areas of difficult access. Some ulcers show signs of healing at the periphery, but with central areas that appear to have been recently traumatized.

Past medical history: denies systemic diseases, allergies, or regular medication use. Denies accidental trauma. Psychosocial history: reports significant academic stress, difficulties in recent romantic relationship, and "anxiety since adolescence". Denies previous psychological or psychiatric follow-up.

Investigations performed: complete blood count, renal and hepatic function tests, blood glucose, inflammatory activity markers - all normal. Serologies for autoimmune diseases: ANA negative, complement normal. Skin biopsy of active lesion: nonspecific dermatitis with superficial necrosis, mixed inflammatory infiltrate, without signs of vasculitis, infection, or malignancy. Bacterial culture negative.

Initial treatment with topical antibiotics and dressings resulted in no improvement. Patient returns after three weeks with new lesions. It is observed that old lesions under occlusive dressings showed significant healing, while exposed areas present new ulcers.

In a subsequent consultation, with an empathetic and non-confrontational approach, the patient eventually admits that "sometimes she scratches a lot" the lesions and that "perhaps she uses her nails harder than she should". Denies use of objects or chemical substances. Shows distress with the situation and reports that the lesions worsen when she is "very stressed about college exams".

Step-by-Step Coding:

Criteria Analysis:

1. Presence of skin lesions: Confirmed - multiple ulcers at different stages
2. Atypical/bizarre morphology: Confirmed - geometric shape, angular borders incompatible with known dermatoses
3. Suggestive location: Confirmed - exclusively in areas accessible to the hands
4. Exclusion of organic causes: Confirmed - extensive investigation negative for infectious, autoimmune, metabolic causes
5. Evidence of self-induction: Confirmed - partial admission of manipulation, healing under occlusion, appearance of new lesions in exposed areas
6. Psychological component: Present - anxiety, identifiable stressors, temporal correlation between stress and worsening of lesions

Code chosen: ED00 - Factitious disorder of the skin

Complete justification:

Code ED00 is the most appropriate because:

• The lesions present clearly factitious morphological characteristics (geometric, angular)
• There is circumstantial evidence and partial admission of self-induction
• Extensive investigation reasonably excluded organic causes
• The anatomical distribution is typical of self-inflicted lesions
• The occlusion test was positive (healing under dressings)
• There is no evidence of external motivation for simulation (exclusion of code 1136473465)
• Although there is manipulation of the lesions, the extent and depth go beyond simple excoriation disorder (exclusion of code 726494117)
• There is no fabrication of elaborate medical history or attempt to deceive multiple professionals that would characterize factitious disorder (exclusion of code 430567349)

Applicable complementary codes:

• Additional code for anxiety disorder if formally diagnosed after psychiatric evaluation
• Z code for problems related to academic stress and relationship difficulties

Management plan:

• Referral to psychology/psychiatry for evaluation and treatment of underlying emotional issues
• Continue dermatological follow-up with occlusive dressings
• Integrated and non-punitive approach
• Psychoeducation about the mind-skin connection
• Consider cognitive-behavioral therapy

7. Related Codes and Differentiation

Within the Same Category:

ED01: Simulation of skin disease

When to use ED01 versus ED00: Use ED01 when there is clear evidence that the patient is consciously fabricating or exaggerating cutaneous symptoms with the objective of obtaining specific and identifiable external gains. Examples include: seeking financial compensation for alleged occupational disease, avoiding legal or military responsibilities, obtaining controlled medications for sale or abuse, or obtaining social security benefits.

Main difference: The fundamental distinction lies in conscious intentionality and the nature of motivation. ED01 involves deliberate deception with clear external gain, whereas ED00 involves production of lesions with predominantly internal and psychological motivation, where the level of consciousness may be partial or fluctuating. In ED00, there is genuine psychological suffering; in ED01, the behavior is instrumental and calculated. Patients with ED00 frequently show ambivalence or distress about their lesions; patients with ED01 typically maintain the fabricated history consistently and may react defensively when confronted.

ED02: Painful bruising syndrome

When to use ED02 versus ED00: Use ED02 specifically for cases of recurrent, painful ecchymoses (hematomas) that appear suddenly, frequently in middle-aged women, and that may have a self-induced component but present very particular clinical characteristics. This syndrome has a relatively homogeneous and recognizable clinical presentation.

Main difference: ED02 is a more specific and circumscribed entity, referring exclusively to painful ecchymoses with a characteristic pattern. ED00 is a broader category that encompasses various types of artefactual lesions (ulcers, chemical burns, deep excoriations, lesions from substance injection). If the clinical presentation consists exclusively of recurrent painful ecchymoses without other types of lesions, ED02 is more specific and preferable. If there is a variety of types of lesions or if the lesions are not predominantly ecchymoses, ED00 is the appropriate code.

Differential Diagnoses:

Pyoderma gangrenosum: Can be confused due to deep and painful ulcers, but presents specific histopathological characteristics, is frequently associated with systemic diseases (inflammatory bowel disease, arthritis), and ulcers have characteristic violaceous borders and progress progressively even without manipulation.

Cutaneous vasculitides: May present with ulcers, but there is usually palpable purpura, characteristic distribution pattern (lower extremities), laboratory evidence of systemic disease, and biopsy shows leukocytoclastic vasculitis.

Atypical cutaneous infections: Atypical mycobacteria or deep fungal infections may cause chronic ulcers, but specific cultures are positive, there is response to appropriate antimicrobials, and the morphology is not typically geometric.

Cutaneous lymphoma: May present with refractory ulcerated lesions, but biopsy reveals atypical lymphocytic infiltrate, and there is progression even without manipulation.

8. Differences with ICD-10

Equivalent ICD-10 code: In ICD-10, the concept of factitious disorder of the skin was dispersed across different codes, including L98.1 (Factitious dermatitis) and F68.1 (Deliberate production or feigning of symptoms or disabilities, physical or psychological - factitious disorder).

Main changes in ICD-11:

ICD-11 represents a significant advance by creating a specific category (ED00) for factitious disorders of the skin, recognizing them as a distinct entity with its own characteristics. The main changes include:

1. Increased specificity: ICD-11 clearly differentiates between factitious disorder of the skin (ED00), malingering (separate code), and excoriation disorder (separate code), whereas ICD-10 had significant conceptual overlap.

2. Recognition of psychological nature: ICD-11 positions these conditions in a way that explicitly recognizes the interface between dermatology and mental health, facilitating an integrated approach.

3. Diagnostic clarity: The definition in ICD-11 is more precise, emphasizing specific morphological characteristics (geometric and bizarre configuration) that aid in differential diagnosis.

4. Separation of intentions: ICD-11 more clearly separates conditions where there is manipulation with internal psychological motivation (ED00) from those with external gains (malingering), reducing ambiguity.

Practical impact of these changes:

For healthcare professionals, ICD-11 offers greater diagnostic precision and facilitates communication between specialties. More specific coding allows better epidemiological tracking and research on these conditions. For health systems, it allows more appropriate resource allocation, recognizing that these patients require a multidisciplinary approach including mental health. For patients, it reduces stigma by formally recognizing the medical nature of the condition, potentially facilitating access to appropriate treatment. The clear separation between different forms of self-induction also has important medicolegal implications, especially in contexts where there are issues of compensation or legal liability.

9. Frequently Asked Questions

1. How is the diagnosis of factitious disorder of the skin made?

The diagnosis is essentially clinical and based on a set of suggestive characteristics. First, observe the morphology of the lesions: geometric shape, perfect angular or linear borders, uniform depth, and bizarre configuration that does not correspond to patterns of known dermatoses are highly suggestive. Location is crucial - factitious lesions occur exclusively in areas accessible to the patient's hands, completely sparing the back, posterior scalp, and other hard-to-reach areas. The occlusion test (coverage with impermeable dressings) frequently results in rapid scarring, while exposed areas develop new lesions. Laboratory and histopathological investigation serves mainly to exclude organic causes - biopsies generally show only nonspecific changes compatible with trauma. Psychological or psychiatric evaluation is an essential component, identifying comorbidities and underlying stressors. The diagnosis is rarely admitted promptly by the patient, requiring an empathetic and non-confrontational approach over time.

2. Is treatment available in public health systems?

Treatment for factitious disorder of the skin is generally available in public health systems, although the ideal approach requires multidisciplinary resources that may have variable availability. Treatment involves two main fronts: dermatological management (dressings, lesion protection, treatment of secondary infections) and psychological/psychiatric intervention (psychotherapy, medication when indicated for comorbidities). Dermatology and mental health services in public systems can offer these treatments, but integration between specialties is not always optimized. Psychotherapy, especially cognitive-behavioral therapy, is the treatment of choice but may have waiting lists in public services. Psychotropic medications when necessary (antidepressants, anxiolytics) are generally available in public formularies. The greatest challenge is often not the theoretical availability of treatment, but rather the correct identification of the condition and patient engagement in psychological treatment, which may be initially resisted.

3. How long does treatment last?

The duration of treatment for factitious disorder of the skin is highly variable and depends on multiple factors: severity of lesions, chronicity of behavior, presence and severity of psychiatric comorbidities, patient insight, motivation for change, and quality of available social support. In less severe cases with good insight, there may be significant improvement in a few months of structured psychotherapy. More complex cases, especially when associated with personality disorders or significant trauma, may require psychological treatment for years. The acute phase of dermatological management (scarring of existing lesions) may take weeks to months, but prevention of recurrences requires addressing underlying psychological issues, which is a more prolonged process. It is important to establish realistic expectations with patients and families that this is a condition requiring commitment to long-term treatment, similar to other chronic mental health conditions. Relapses may occur, especially during periods of stress, but do not signify treatment failure.

4. Can this code be used in medical certificates?

The use of code ED00 in medical certificates requires careful consideration of the context and purpose of the document. For simple medical certificates justifying absences for consultations or dermatological procedures, one may use more generic terminology such as "dermatosis under investigation" or "dermatological treatment," without necessarily specifying the complete diagnosis. For official medical documentation in medical records, reports for other healthcare professionals, or situations where precise diagnosis is necessary for therapeutic planning, code ED00 should be used appropriately. In medico-legal, occupational, or social security contexts, the decision to include this specific code should consider potential implications for the patient, always balancing diagnostic accuracy with protection against stigmatization. Consult local regulations on medical privacy and patient rights. In general, the guiding principle should be: use the code when necessary for appropriate patient care, but carefully consider the context when the document will have administrative or legal purposes.

5. Do patients with this diagnosis have awareness of what they are doing?

The level of awareness or insight in patients with factitious disorder of the skin is extremely variable and represents a continuous spectrum. Some patients are fully aware that they are producing the lesions but feel compelled to do so for emotional reasons they cannot completely control. Others have partial or fluctuating awareness - they may admit to "scratching" or "manipulating" the lesions but significantly minimize the extent or intentionality. Some patients genuinely lack clear awareness of the self-induced behavior, which may occur in dissociative states or during sleep. There are also cases where the patient completely denies any self-induction despite strong circumstantial evidence. It is important to understand that lack of admission does not necessarily indicate deliberate lying - complex psychological mechanisms of denial, dissociation, or repression may be operating. The clinical approach should be empathetic and non-confrontational, recognizing that forcing admission is rarely therapeutic and may harm the therapeutic alliance necessary for effective treatment.

6. What is the difference between this disorder and self-harm?

Although both involve self-inflicted injuries, there are important differences. Self-harm (non-suicidal self-injury) typically refers to deliberate and conscious behavior of cutting, burning, or injuring oneself with the objective of regulating intense emotions or expressing psychological suffering, frequently associated with borderline personality disorder. The lesions are generally recognized by the patient as self-inflicted, and there is less tendency to seek medical treatment for the lesions themselves. In factitious disorder of the skin (ED00), there is frequently denial or minimization of self-induction, active seeking of dermatological treatment for the lesions, and the lesions may present more elaborate or bizarre characteristics that simulate dermatoses. The motivation also differs: in self-harm, the objective is typically immediate emotional relief; in factitious disorder, there may be more complex motivations related to obtaining care, expressing suffering in somatic form, or satisfying unconscious psychological needs. There is certainly overlap between these conditions, and some patients may present both patterns.

7. Can children develop this disorder?

Yes, children and adolescents can develop factitious disorder of the skin, although the presentation and context may differ from adults. In younger children, factitious lesions may be related to curiosity, imitation of observed behaviors, or response to family or school stressors. In adolescents, there may be overlap with non-suicidal self-injury behaviors, and there is frequently association with emotional difficulties, identity problems, bullying, or family conflicts. Evaluation of children requires particular sensitivity, including assessment of the family environment and consideration of the possibility of abuse or neglect. Treatment in the pediatric population should always involve the family and may include family therapy, school interventions, and age-appropriate individual psychotherapy. The prognosis in children may be better than in adults when there is early intervention and addressing of underlying family and environmental issues. It is crucial to differentiate from factitious disorder imposed on another, where a caregiver (usually the mother) induces lesions in the child.

8. Is there risk of serious complications?

Yes, factitious disorder of the skin can result in significant medical complications. Complications include: secondary infections (cellulitis, abscesses, rarely sepsis), permanent disfiguring scars that may cause additional psychological suffering and functional impairment, deep tissue necrosis especially when caustic chemical substances are used, osteomyelitis when deep lesions reach bone tissue, and complications from unnecessary medical procedures performed during diagnostic investigation. There is also psychological risk: deterioration of underlying mental health, social isolation due to stigma or shame, occupational or academic impairment, and in rare cases, self-injurious behaviors may progress to suicide attempts. Additionally, there is significant impact on quality of life and the healthcare system due to multiple consultations, hospitalizations, and ineffective treatments. These potential complications reinforce the importance of early diagnosis and appropriate treatment, including addressing underlying psychological issues.

---

Conclusion:

Factitious disorder of the skin (ED00) represents a diagnostic and therapeutic challenge that requires an integrated approach between dermatology and mental health. Correct coding is essential not only for accurate documentation, but fundamentally to ensure that patients receive appropriate treatment that addresses both cutaneous manifestations and underlying psychological issues. Understanding the distinctive characteristics of this condition, the criteria for differentiation from similar diagnoses, and the importance of an empathetic and non-judgmental approach is fundamental for all professionals involved in the care of these complex patients. ICD-11, through code ED00, offers a clearer and more specific framework for recognition and management of this challenging condition.

External References

This article was developed based on reliable scientific sources:

1. 🌍 WHO ICD-11 - Factitious disorder of the skin
2. 🔬 PubMed Research on Factitious disorder of the skin
3. 🌍 WHO Health Topics
4. 📊 Clinical Evidence: Factitious disorder of the skin
5. 📋 Ministry of Health - Brazil
6. 📊 Cochrane Systematic Reviews

References verified on 2026-02-04