UWORLD PAPULOSQUAMOUS DISORDERS
EXAMINATION SET 2026 SOLVED
QUESTIONS GRADED A+
● What are typical psoriasis skin lesions? Answer: Well-defined
erythematous plaques with silvery scale
● Where are common locations of psoriasis plaques? Answer: Scalp,
elbows, knees, back/gluteal cleft, nails
● What extracutaneous condition is associated with psoriasis? Answer:
Psoriatic arthritis
● What phenomenon causes lesions at trauma sites in psoriasis? Answer:
Koebner phenomenon
● What is the first-line treatment for mild psoriasis? Answer: High-
potency topical corticosteroids
● What is the treatment for mild nail psoriasis (1-2 nails)? Answer:
Topical steroids ± vitamin D analogs (calcipotriol)
, ● What is the treatment for widespread nail psoriasis? Answer: Systemic
therapy (methotrexate, TNF-α inhibitors)
● How does nodular melanoma grow? Answer: Vertically (early
invasion)
● Why may nodular melanoma lack ABCDE features? Answer: Minimal
horizontal spread
● What are key warning signs of nodular melanoma? Answer: Ugly
duckling, elevation, firmness, rapid growth
● What is the best diagnostic test for suspected melanoma? Answer:
Full-thickness excisional biopsy
● What is the causative organism of tinea versicolor? Answer:
Malassezia species
● Why doesn't tinea versicolor tan? Answer: Fungal disruption of
melanocyte function
● What is the typical distribution of tinea versicolor? Answer: Upper
trunk & upper extremities (face in children)
EXAMINATION SET 2026 SOLVED
QUESTIONS GRADED A+
● What are typical psoriasis skin lesions? Answer: Well-defined
erythematous plaques with silvery scale
● Where are common locations of psoriasis plaques? Answer: Scalp,
elbows, knees, back/gluteal cleft, nails
● What extracutaneous condition is associated with psoriasis? Answer:
Psoriatic arthritis
● What phenomenon causes lesions at trauma sites in psoriasis? Answer:
Koebner phenomenon
● What is the first-line treatment for mild psoriasis? Answer: High-
potency topical corticosteroids
● What is the treatment for mild nail psoriasis (1-2 nails)? Answer:
Topical steroids ± vitamin D analogs (calcipotriol)
, ● What is the treatment for widespread nail psoriasis? Answer: Systemic
therapy (methotrexate, TNF-α inhibitors)
● How does nodular melanoma grow? Answer: Vertically (early
invasion)
● Why may nodular melanoma lack ABCDE features? Answer: Minimal
horizontal spread
● What are key warning signs of nodular melanoma? Answer: Ugly
duckling, elevation, firmness, rapid growth
● What is the best diagnostic test for suspected melanoma? Answer:
Full-thickness excisional biopsy
● What is the causative organism of tinea versicolor? Answer:
Malassezia species
● Why doesn't tinea versicolor tan? Answer: Fungal disruption of
melanocyte function
● What is the typical distribution of tinea versicolor? Answer: Upper
trunk & upper extremities (face in children)
