Dermatology
Final Test Review
(Questions & Solutions)
2025
1
, Question 1:
A 17‑year‑old male undergoing a course of systemic corticosteroids for
severe asthma develops a sudden eruption of small, uniform papules and
pustules on his face, without comedones.
A) Acne vulgaris
B) Steroid-induced acne
C) Rosacea
D) Bacterial folliculitis
Correct ANS: B
Rationale: Steroid-induced acne typically presents as a monomorphic
eruption with papules and pustules, lacking the comedones seen in acne
vulgaris. Systemic corticosteroid use is a classic trigger.
---
Question 2:
A 21‑year‑old female receiving lithium therapy for bipolar disorder
develops an inflammatory papulopustular eruption on her face and
upper trunk.
A) Acne vulgaris
B) Drug-induced acneiform eruption
C) Rosacea
D) Bacterial folliculitis
Correct ANS: B
Rationale: Lithium is a well‑known cause of drug-induced acneiform
eruptions. The eruption tends to be monomorphic and may appear on
the face and trunk, distinguishing it from common acne vulgaris.
---
Question 3:
A 22‑year‑old female with metastatic colorectal cancer is started on an
2
,epidermal growth factor receptor (EGFR) inhibitor. Within two weeks,
she develops a papulopustular eruption on her face and upper chest.
A) Acne vulgaris
B) EGFR inhibitor-induced acneiform eruption
C) Rosacea
D) Worsening folliculitis
Correct ANS: B
Rationale: EGFR inhibitors often produce an acneiform eruption
characterized by inflammatory papules and pustules that occur rapidly
after starting therapy; this is distinct from acne vulgaris in its onset and
distribution.
---
Question 4:
A 30‑year‑old male begins high‑dose vitamin B12 supplementation and
soon develops a sudden onset of acneiform lesions on his face.
A) Acne vulgaris
B) Vitamin B12-induced acneiform eruption
C) Steroid-induced acne
D) Folliculitis due to bacterial infection
Correct ANS: B
Rationale: High doses of vitamin B12 can trigger an acneiform eruption
by altering the skin flora and inflammatory response, manifesting as an
outbreak of papules and pustules.
---
Question 5:
A 19‑year‑old female experiences an acneiform eruption localized to her
jawline and perioral region after switching to heavy cosmetic products.
A) Acne vulgaris
B) Acne cosmetica
C) Steroid-induced acne
D) Perioral dermatitis
3
, Correct ANS: B
Rationale: Acne cosmetica results from the occlusion of pores by
cosmetic products and typically presents in areas of heavy product use
such as the jawline and perioral region.
---
Papulosquamous Disorders
Question 6:
A 35‑year‑old man presents with well‑demarcated, erythematous, scaly
plaques on his elbows and knees.
A) Psoriasis vulgaris
B) Atopic dermatitis
C) Nummular eczema
D) Pityriasis rosea
Correct ANS: A
Rationale: Chronic plaque psoriasis is characterized by symmetric,
erythematous plaques with silvery scales on extensor surfaces (e.g.,
elbows, knees) and is the classic presentation in adults.
---
Question 7:
A 40‑year‑old woman presents with a scaly, papulosquamous eruption
on her scalp and behind her ears. The lesions are well‑demarcated.
A) Seborrheic dermatitis
B) Psoriasis
C) Lichen planus
D) Pityriasis rubra pilaris
Correct ANS: B
Rationale: Psoriasis often involves the scalp and retroauricular areas
with sharply demarcated, scaly plaques. Although seborrheic dermatitis
also affects the scalp, its appearance is typically less well‑defined.
4
Final Test Review
(Questions & Solutions)
2025
1
, Question 1:
A 17‑year‑old male undergoing a course of systemic corticosteroids for
severe asthma develops a sudden eruption of small, uniform papules and
pustules on his face, without comedones.
A) Acne vulgaris
B) Steroid-induced acne
C) Rosacea
D) Bacterial folliculitis
Correct ANS: B
Rationale: Steroid-induced acne typically presents as a monomorphic
eruption with papules and pustules, lacking the comedones seen in acne
vulgaris. Systemic corticosteroid use is a classic trigger.
---
Question 2:
A 21‑year‑old female receiving lithium therapy for bipolar disorder
develops an inflammatory papulopustular eruption on her face and
upper trunk.
A) Acne vulgaris
B) Drug-induced acneiform eruption
C) Rosacea
D) Bacterial folliculitis
Correct ANS: B
Rationale: Lithium is a well‑known cause of drug-induced acneiform
eruptions. The eruption tends to be monomorphic and may appear on
the face and trunk, distinguishing it from common acne vulgaris.
---
Question 3:
A 22‑year‑old female with metastatic colorectal cancer is started on an
2
,epidermal growth factor receptor (EGFR) inhibitor. Within two weeks,
she develops a papulopustular eruption on her face and upper chest.
A) Acne vulgaris
B) EGFR inhibitor-induced acneiform eruption
C) Rosacea
D) Worsening folliculitis
Correct ANS: B
Rationale: EGFR inhibitors often produce an acneiform eruption
characterized by inflammatory papules and pustules that occur rapidly
after starting therapy; this is distinct from acne vulgaris in its onset and
distribution.
---
Question 4:
A 30‑year‑old male begins high‑dose vitamin B12 supplementation and
soon develops a sudden onset of acneiform lesions on his face.
A) Acne vulgaris
B) Vitamin B12-induced acneiform eruption
C) Steroid-induced acne
D) Folliculitis due to bacterial infection
Correct ANS: B
Rationale: High doses of vitamin B12 can trigger an acneiform eruption
by altering the skin flora and inflammatory response, manifesting as an
outbreak of papules and pustules.
---
Question 5:
A 19‑year‑old female experiences an acneiform eruption localized to her
jawline and perioral region after switching to heavy cosmetic products.
A) Acne vulgaris
B) Acne cosmetica
C) Steroid-induced acne
D) Perioral dermatitis
3
, Correct ANS: B
Rationale: Acne cosmetica results from the occlusion of pores by
cosmetic products and typically presents in areas of heavy product use
such as the jawline and perioral region.
---
Papulosquamous Disorders
Question 6:
A 35‑year‑old man presents with well‑demarcated, erythematous, scaly
plaques on his elbows and knees.
A) Psoriasis vulgaris
B) Atopic dermatitis
C) Nummular eczema
D) Pityriasis rosea
Correct ANS: A
Rationale: Chronic plaque psoriasis is characterized by symmetric,
erythematous plaques with silvery scales on extensor surfaces (e.g.,
elbows, knees) and is the classic presentation in adults.
---
Question 7:
A 40‑year‑old woman presents with a scaly, papulosquamous eruption
on her scalp and behind her ears. The lesions are well‑demarcated.
A) Seborrheic dermatitis
B) Psoriasis
C) Lichen planus
D) Pityriasis rubra pilaris
Correct ANS: B
Rationale: Psoriasis often involves the scalp and retroauricular areas
with sharply demarcated, scaly plaques. Although seborrheic dermatitis
also affects the scalp, its appearance is typically less well‑defined.
4
