<unk>  may often present with paronychia, ingrown nail, onycholysis, pyogenic granuloma, nail-plate dystrophy, longitudinal erythronychia, bleeding, and discolorations. There are various benign and malignant<unk>  that may occur in or overlying the nail matrix and in the<unk> , and symptoms may include pain, itching, and throbbing. Benign tumors of the nails include verruca, pyogenic granuloma, fibromas, nevus cell nevi, myxoid cysts, angiofibromas (Koenen tumors), and epidermoid cysts. Squamous cell carcinoma of the<unk>  is uncommon, and often mistaken for a pyogenic granuloma initially. Subungual melanoma is frequently diagnosed late in the course of growth.
Neoplasms of the nailbed
Congenital malformations of the dermatoglyphs
Purpura of the nail bed
Cutaneous lymphoid hyperplasia
Cutaneous Streptococcus iniae infection
Melanocytic oral lesion
Reticular pigmented anomaly of the flexures
Cutaneous sinus of dental origin