Tinea Unguium

Nail ringworm is a fungal infection that affects the nails, most frequently those of the feet. It is also known as onychomycosis when referring to fungal involvement of the nail.

How it shows up: The nail tends to thicken, change color toward yellowish or whitish tones, become brittle, and, sometimes, separate from its bed.

Factors that favor its appearance: Prolonged moisture, closed footwear, small repeated injuries, and contact in shared humid spaces can contribute.

When to seek care? If a nail persistently changes in appearance or the change spreads, an evaluation helps to confirm the cause. The dermatologist is the specialist of reference, and the general practitioner or family physician can also guide the first step. It is advisable to consult about it rather than trying remedies on your own.