A Tale of a Double-Nailed Toe

Fig. 1. A well-defined keratotic plaque on the plantar right toe mimicking nail structure. Fig. 2. Thickening of the nail plate with yellow-brown chromonychia, longitudinal striae of various colors along with scaling, and dryness of the adjacent skin. patient. Mycological examination of her toe nails confirmed the diagnosis of onychomycosis. Fungal culture revealed trichophyton rubrum. Dermoscopic findings revealed thickening of the nail plate with yellow-brown chromonychia, longitudinal striae of various colors along with scaling, and dryness of the adjacent skin (Fig. 2). What is your diagnosis?