Distal subungual onychomycosis. Various patterns are produced as the fungus grows proximally.

White superficial onychomycosis. The surface of the nail is soft, dry, and powdery, and can easily be scraped away.

Proximal subungual onychomycosis. Hyperkeratotic debris accumulates and causes the nail to separate from the nail bed.

Distal subungual onychomycosis. A yellow to brown color extends the full thickness of the nail.