This document defines and provides examples of medical terms related to the skin and nails. It discusses conditions of the skin like dermatitis and dermatosis, melanoma and melanocytes related to black or dark skin features, and nail conditions like onychomycosis and onychophagia. It also defines terms ending in -derma, such as erythroderma meaning red skin and pyoderma meaning pus on the skin.

3. DERMATOSIS

6. MELANOCYTE

9. ONYCHOPHAGIA

12. PYODERMA