Friday Pop Quiz 2/6/2026
A 65-year-old patient presents with this painful, itchy rash on the right dorsal foot. The pain has made ambulating difficult. Prior unsuccessful treatments included topical betamethasone and clotrimazole. Based on the image provided, which of the following treatments have the highest cure rate?
A. Oral itraconazole
B. Oral terbinafine
C. Topical ciclopirox nail lacquer
D. Topical …
A 65-year-old patient presents with this painful, itchy rash on the right dorsal foot. The pain has made ambulating difficult. Prior unsuccessful treatments included topical betamethasone and clotrimazole. Based on the image provided, which of the following treatments have the highest cure rate?
A. Oral itraconazole
B. Oral terbinafine
C. Topical ciclopirox nail lacquer
D. Topical … 
Just as pigmented lesions on the skin can vary widely from freckles to lentigines to nevi to melanoma, similar pigmented lesions can be seen in nails. Melanonychia, brown or black pigmentation in the nail plate, can frequently present a diagnostic challenge for the dermatologist. While most causes of melanonychia are benign, it is important to recognize when the diagnosis is malignant or uncerta …