Final answer:
The term that refers to a fungal infection of the natural nail plate is onychomycosis. Treatment for onychomycosis typically involves antifungal medications, either topical or oral, and may also include measures such as keeping the nails clean and dry.
Step-by-step explanation:
The term that refers to a fungal infection of the natural nail plate is onychomycosis. Onychomycosis is a common condition that affects the nails, causing discoloration, thickening, and brittleness. It is usually caused by dermatophytes, which are fungi that thrive on keratin, a protein found in nails and hair. Treatment for onychomycosis typically involves antifungal medications, either topical or oral, and may also include measures such as keeping the nails clean and dry.