“…However, it is still controversial whether only the histological subtype could be a worse outcome variable. 3 Differential diagnoses that should be considered include warts, callosities, eccrine poroma, fungal infections, foreign body, pyogenic granuloma, inflammatory lesions, bullous disorders, diabetic ulcer, nevi, keratoacanthoma, subungual bruising, and onychocryptosis. 1,3,4 It is worth noting that up to 10% of ALM cases can simulate mycotic intertrigo, 3 reaching diagnostic mistakes up to 20% to 34% in some cases series.…”