Friday Pop Quiz 5/15/2026
A 64-year-old female patient presents with an intensely itchy rash on the shins, thighs, feet, and forearms. The lesions consist of multiple raised papules that are scaly and reddish-brown. The papules may coalesce into thickened plaques. What is the most likely diagnosis for this condition?
A. Lichen amyloidosis
B. Nodular primary cutaneous amyloidosis
C. Macular amyloidosis
D. Sy …
A 64-year-old female patient presents with an intensely itchy rash on the shins, thighs, feet, and forearms. The lesions consist of multiple raised papules that are scaly and reddish-brown. The papules may coalesce into thickened plaques. What is the most likely diagnosis for this condition?
A. Lichen amyloidosis
B. Nodular primary cutaneous amyloidosis
C. Macular amyloidosis
D. Sy … 
A 50-year-old-male presents to clinic with a pruritic, linear distributed rash that has been present for two weeks without any other involvement (such as scalp or nails). On examination, there is a linearly arranged eczematous papular eruption on the right flank. What is the best diagnosis?
A. Blaschkitis
B. Psoriasis (linear)
C. Herpes simplex
D. Factitial condition
E. Linear l … 
An 18 year old female presents with the following rash. The patient notes the rash is mildly itchy and occurs monthly in the same area. What is the most likely diagnosis?
A. Nummular dermatitis
B. Sweet's syndrome
C. Erythema multiforme
D. Arthropod reaction
E. Fixed drug eruption
To find out the correct answer and read the explanation, click here.
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A 15-year-old girl who recently moved from India to the United States presents to dermatology clinic with chief concern of the pictured rash. She has previously undergone treatment with 4 weeks of daily terbinafine, as well as 6 weeks of fluconazole, without resolution. KOH reveals numerous branching hyphae.
Which of the following is the most appropriate next step?
A. Initiate topica … 
An 8-month-old boy is brought in by his mother for concerns of a rash that comes and goes for the last few months, primarily on his face and belly. His older brother suffers from asthma and often has a similar rash on the inside of his elbow and behind his knees. Lead-in Question: The gene most commonly mutated in the photograph is also mutated in which of the following?
A. Palmoplantar ker …