Friday Pop Quiz 6/27/2025
A patient presents for evaluation of a solitary painful lesion on the shin. She feels well and denies any systemic symptoms. A recent fasting blood glucose was within normal limits. Which of the following is the most likely diagnosis?
A. Pretibial myxedema
B. Morphea
C. Lipodermatosclerosis
D. Necrobiotic xanthogranuloma
…
A patient presents for evaluation of a solitary painful lesion on the shin. She feels well and denies any systemic symptoms. A recent fasting blood glucose was within normal limits. Which of the following is the most likely diagnosis?
A. Pretibial myxedema
B. Morphea
C. Lipodermatosclerosis
D. Necrobiotic xanthogranuloma
… 
A healthy 50-year-old patient presents with three-month history of progressive hair loss and scalp redness with associated pruritus. On closer scalp examination, there is perifollicular erythema, inflammation, and scaling. There appears to be loss of follicular openings in the erythematous patch. In addition, erythematous and skin-col … 
On dermoscopy, which of the following findings most strongly supports the correct diagnosis?
A. Starburst pattern
B. Blue-whitish veil
C. Maple leaf structures
D. Regression structures
E. Irregular streaks
To find out the correct answer and read the explanation, click here.
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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 … 
A 31-year-old male presents to the dermatologist with the condition depicted in the image. The swelling, redness, and pain started around the nail after a traumatic event. Since then, he has had this area drained, and he has taken several courses of antibiotics. He is concerned that it is not improving and requests further evaluation … 