Friday Pop Quiz 12/12/2025
A 40-year-old patient presents with a rash on his hands, as shown. It has developed in the past 6 months and is gradually becoming more severe. He describes intense pruritus. The patient is a construction worker, working primarily with concrete. He was prescribed clobetasol ointment, which provides some relief but does not clear the rash. He notes that he recently took a week-long vacation at …
Friday Pop Quiz 11/28/2025
A previously healthy 55-year-old patient presents with a four-month history of the pictured indurated papules and plaques. History does not reveal prior skin problems. The lesions started on the cheeks and are now affecting the forehead. The sun seems to exacerbate the condition, causing mild burning and pruritus. Patient complains of cheek swelling that worsens in the morning and improves as …
Friday Pop Quiz 11/21/2025
After treating this patient with Onabotulinumtoxin-A, they return to clinic complaining of their right upper eyelid drooping and interfering with their vision. What is the mechanism of action of the medicated eye drops which has been shown to be beneficial when this adverse effect occurs? A. Alpha agonist which results in contraction of the superior tarsal muscle B. Alpha agonist which resul …
Friday Pop Quiz 11/12/2025
A 40-year-old female presents for a scalp biopsy. On histology, you note premature desquamation of the inner root sheath, eccentric epithelial atrophy with hair shafts in close proximity to the dermis, and concentric lamellar fibroplasia of some follicles. There is variably dense lymphocytic perifollicular inflammation, primarily at the level of the upper isthmus and lower infundibulum. There …