i-Human Case Study Week 8 Exam: 13-Year-Old
Female with Itchy Skin – Atopic Dermatitis
Differential Diagnosis & Management
Section I: Multiple Choice (30 points – 3 points each)
Select the single best answer for each question.
1. Which of the following historical features is most strongly associated with
atopic dermatitis?
• A) Acute onset after poison ivy exposure
• B) Family history of asthma and allergic rhinitis
• C) Recent travel to a tropical region
• D) Use of a new laundry detergent
2. The patient’s rash is located primarily in the antecubital and popliteal fossae.
This distribution is most characteristic of:
• A) Psoriasis
• B) Scabies
• C) Atopic dermatitis
• D) Tinea corporis
3. Which of the following physical exam findings would most suggest a
secondary bacterial infection in this patient?
• A) Lichenification
• B) Excoriations
, • C) Honey-colored crusting
• D) Erythema
4. A KOH preparation of a skin scraping is negative for hyphae. This finding
helps rule out:
• A) Atopic dermatitis
• B) Allergic contact dermatitis
• C) Tinea corporis
• D) Scabies
5. Which diagnostic test would be most helpful to confirm an atopic
predisposition?
• A) Patch testing
• B) Serum IgE level
• C) Skin biopsy
• D) Wood’s lamp examination
6. The patient reports that her itching is significantly worse at night. This
finding is characteristic of all of the following EXCEPT:
• A) Scabies
• B) Atopic dermatitis
• C) Contact dermatitis
• D) Tinea versicolor
7. Which topical medication is most appropriate for long-term management of
atopic dermatitis on the face to avoid steroid-induced atrophy?
• A) Hydrocortisone 2.5% ointment
• B) Triamcinolone 0.1% ointment
Female with Itchy Skin – Atopic Dermatitis
Differential Diagnosis & Management
Section I: Multiple Choice (30 points – 3 points each)
Select the single best answer for each question.
1. Which of the following historical features is most strongly associated with
atopic dermatitis?
• A) Acute onset after poison ivy exposure
• B) Family history of asthma and allergic rhinitis
• C) Recent travel to a tropical region
• D) Use of a new laundry detergent
2. The patient’s rash is located primarily in the antecubital and popliteal fossae.
This distribution is most characteristic of:
• A) Psoriasis
• B) Scabies
• C) Atopic dermatitis
• D) Tinea corporis
3. Which of the following physical exam findings would most suggest a
secondary bacterial infection in this patient?
• A) Lichenification
• B) Excoriations
, • C) Honey-colored crusting
• D) Erythema
4. A KOH preparation of a skin scraping is negative for hyphae. This finding
helps rule out:
• A) Atopic dermatitis
• B) Allergic contact dermatitis
• C) Tinea corporis
• D) Scabies
5. Which diagnostic test would be most helpful to confirm an atopic
predisposition?
• A) Patch testing
• B) Serum IgE level
• C) Skin biopsy
• D) Wood’s lamp examination
6. The patient reports that her itching is significantly worse at night. This
finding is characteristic of all of the following EXCEPT:
• A) Scabies
• B) Atopic dermatitis
• C) Contact dermatitis
• D) Tinea versicolor
7. Which topical medication is most appropriate for long-term management of
atopic dermatitis on the face to avoid steroid-induced atrophy?
• A) Hydrocortisone 2.5% ointment
• B) Triamcinolone 0.1% ointment
