Friday Pop Quiz 3/27/2026
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 …
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 45-year-old man presents to the office with weakness and the lesions on his hand pictured. His symptoms have been progressively worsening over the last 5 months. He works as a nurse and has had difficulty walking up the stairs and lifting patients. He has a history of frontal migraines for which he occasionally takes ibuprofen. He takes a cholesterol lowering medication and is otherwise heal … 
A 30 year old female at 20 weeks gestation presents with the following rash. She notes a similar rash occurred during her last pregnancy but spontaneously resolved. Which of the following is the most likely diagnosis?
A. Atopic eruption of pregnancy
B. Impetigo herpetiformus
C. Polymorphus eruption of pregnancy
D. Pemphigu … 
What is the first-line therapy for the mild-moderate disease depicted in the image?
A. Narrow-band UVB
B. Biologic agents
C. Acitretin
D. Topical glucocorticoids
E. Methotrexate
To find out the correct answer and read the explanation, click here.
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