# A nurse is assessing a 12-year-old adolescent with atopic dermatitis (eczema). Which assessment finding would be most characteristic of this condition in an adolescent? > source: MyMerci (mymerci.kr) > url: https://mymerci.kr/pages/nclex_q.php?qn_id=542323 > language: ko > subject: Child Health ## 문제 A nurse is assessing a 12-year-old adolescent with atopic dermatitis (eczema). Which assessment finding would be most characteristic of this condition in an adolescent? ## 보기 1. Dry, scaly patches with erythema on the cheeks and forehead **✔ 정답** 2. Vesicular lesions with honey-crusted appearance around the mouth 3. Circular, well-demarcated patches with central clearing 4. Petechial rash distributed over the trunk and extremities **정답: 1** ## 해설 Infantile atopic dermatitis commonly presents as dry, scaly, erythematous patches on the cheeks and forehead. Other options describe conditions like impetigo (honey-crusted vesicles), tinea corporis (circular patches), or petechial rashes from other causes. ## 심화 해설 Correct Answer Analysis The correct answer is 1: Dry, scaly patches with erythema on the cheeks and forehead. Atopic dermatitis (AD) is a chronic, relapsing inflammatory dermatosis characterized by pruritus, xerosis, and **age-dependent clinical heterogeneity** [1]. This means the presentation changes as a child grows. In adolescents, the morphology typically shifts from the acute, weeping lesions seen in infancy to more chronic, lichenified, and dry, scaly patches. While the classic infantile distribution involves the face (cheeks and forehead), the persistence or recurrence of these dry, erythematous patches on the face remains a very characteristic and common finding in the adolescent age group, reflecting the chronic and relapsing nature of the disease [1]. Distractor Analysis - **Option 2: Vesicular lesions with a honey-crusted appearance around the mouth.** This description is highly suggestive of impetigo, a superficial bacterial skin infection often caused by *Staphylococcus aureus* or *Streptococcus pyogenes*. While patients with AD are at increased risk for secondary bacterial infections due to a compromised skin barrier, the honey-crusted vesicles are not a primary characteristic of AD itself. They represent a secondary complication or a separate condition that can mimic AD [1]. - **Option 3: Circular, well-demarcated patches with central clearing.** This is the classic presentation of dermatophytosis, commonly known as ringworm. Dermatophytosis is a fungal infection and is explicitly listed in the provided reference as a key condition that can mimic AD [1]. The well-demarcated border and central clearing are defining features that help differentiate it from the ill-defined, scaly patches of AD. - **Option 4: Petechial rash distributed over the trunk and extremities.** A petechial rash indicates bleeding under the skin and is not a feature of atopic dermatitis. This type of rash is associated with vasculitis, platelet disorders, or serious systemic infections. It is not an inflammatory eczematous condition and is not mentioned as a mimicker or characteristic of AD [1]. Pathophysiology and Age-Dependent Presentation The clinical heterogeneity of AD across different age groups is a fundamental concept for accurate diagnosis [1]. The underlying pathophysiology involves a defective skin barrier (often related to filaggrin mutations), immune dysregulation, and altered microbiome. In infancy, the disease often presents acutely with weeping, crusted lesions on the face and extensor surfaces. As the child matures into adolescence, the immune response and chronic scratching lead to a shift toward a more chronic pattern. The skin becomes thickened (lichenified) and the lesions are predominantly dry, scaly, and erythematous, often affecting the flexural areas (antecubital and popliteal fossae), but facial involvement remains a significant and characteristic finding. Recognizing this age-dependent morphology is critical for distinguishing AD from its many mimickers, such as seborrheic dermatitis, psoriasis, and nummular eczema, which have different primary lesion types and distributions [1]. References (research sources) - [1]Atopic Dermatitis in Children: Differential Diagnosis and Mimickers.Research articleTüre Avcı B, Çetinarslan T, Türel Ermertcan A, Fölster-Holst R. (2026) · DOI: 10.3390/children13050690 ## 임상 시나리오 Adolescent Atopic Dermatitis AssessmentRecognizing Age-Dependent Morphology In adolescents, atopic dermatitis transitions from acute weeping lesions to chronic, dry, scaly, lichenified plaques. The face, particularly the cheeks and forehead, remains a common distribution site. Key assessment findings include intense pruritus and xerosis. The chronic scratching leads to lichenification, which appears as thickened skin with accentuated markings. CautionAlways differentiate primary AD lesions from secondary infections. Honey-crusted vesicles suggest impetigo, and central clearing suggests dermatophytosis. A compromised skin barrier in AD increases the risk of bacterial superinfection. ## 핵심 개념 - **Atopic Dermatitis** — A chronic, relapsing inflammatory skin condition associated with pruritus and xerosis, presenting with age-dependent clinical features. - **Lichenification** — Thickening and hardening of the skin with exaggerated skin lines, resulting from chronic rubbing or scratching, common in chronic AD. - **Impetigo** — A superficial bacterial skin infection characterized by honey-crusted vesicles, often caused by Staphylococcus aureus. - **Dermatophytosis** — A fungal skin infection (ringworm) presenting as circular, well-demarcated patches with central clearing. - **Petechiae** — Pinpoint, non-blanching red or purple spots on the skin caused by minor hemorrhage, often associated with platelet disorders. ## 같은 주제 문제 - [A nurse is assessing a 6-year-old child with atopic dermatitis (eczema). 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