Friday Pop Quiz 7/10/2026
A 55 year old female presents with the following red-brown nodules on her elbows and similar appearing nodules and plaques on her ankles. She denies recent travel or any new sexual partners. She does note mild arthralgias associated with the rash. She is started on dapsone with some improvement. Which of the following is the best diagnosis?
A. Erythema induratum
B. Erythema elevatum diu …
A 55 year old female presents with the following red-brown nodules on her elbows and similar appearing nodules and plaques on her ankles. She denies recent travel or any new sexual partners. She does note mild arthralgias associated with the rash. She is started on dapsone with some improvement. Which of the following is the best diagnosis?
A. Erythema induratum
B. Erythema elevatum diu … 
Clinicians treating adults with hidradenitis suppurativa (HS) can use a variety of strategies, from topical and oral medications, to deroofing and laser therapy, as research supports their use. However, choosing an appropriate treatment isn’t as easy when the patient is a developing child. Data on the long-term safety of systemic medications for HS in children isn’t well known. Yet treating pe … 
Intense itch is a common feature of prurigo nodularis. Why is this the case? Next Steps in Derm, in partnership with Skin of Color Update, interviewed Dr. Raj J. Chovatiya, associate professor at Rosalind Franklin University of Medicine and Science Chicago Medical School. Dr. Chovatiya, who has a PhD in immunology, outlines the science behind the “unbreakable loop” of chronic itch in prurigo … 
Summer means news articles on sun protection and the dangers of tanning, and for the first time in more than 20 years, the news includes FDA approval of a sunscreen ingredient. As detailed by NPR, newly approved bemotrizinol protects against both UVA and UVB rays, and is photo stable, offering longer protection than other U.S. sunscreens. Even the Environmental Working Group (EWG) is excited about … 
Which of the following wavelength and treatment settings are most appropriate for removal of the pictured lesion?
A. 1064 nm; 4 mm spot size, 110 J/cm2 fluence, and 30 ms pulse duration
B. 585 nm; 10 mm spot size, 10 J/cm2 fluence, and 20 ms pulse duration
C. 694 nm; 4 mm spot size, 3 J/cm2 fluence, and 20 ns pulse duration
D. 1064 nm; 10 mm spot size, 10 J/cm2, and 60 ms pulse dur …