A, Different colors of nail discoloration, including black, yellow, white, and orange. B, Black, white, yellow, and orange discoloration of subungual scales.
[jaad.org]
The infection is characterized by a white or yellow discoloration that appears under the nail.
[symptoma.com]
The infection was characterized clinically by yellow-brown discoloration of the nail plate, distal-lateral onycholysis and subungual hyperkeratosis of the first left toenail
[ncbi.nlm.nih.gov]