Melanonychia: Clues for Diagnosis and the Importance of Histology
Originally published May 26, 2021; updated February 23, 2026 by the Next Steps in Derm Editorial Team with refreshed links and expanded guidance on treating nail disorders.
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 …
Originally published May 26, 2021; updated February 23, 2026 by the Next Steps in Derm Editorial Team with refreshed links and expanded guidance on treating nail disorders.
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 … Continue reading "Melanonychia: Clues for Diagnosis and the Importance of Histology"
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 …