Dark Toenail Discoloration: Causes, Diagnosis, and When to See a Doctor #3411369 (License: Personal Use)

The image displays a close-up of a human big toenail with longitudinal and diffuse dark pigmentation, including shades of brown, gray, and black beneath the translucent nail. The discoloration appears embedded within the nail matrix, with some areas showing possible nail lifting or irregular texture. Such presentation may indicate subungual hematoma, melanonychia, or malignant melanoma, requiring dermatologic assessment.

Used on medical or podiatry websites in articles about toenail abnormalities, differential diagnosis of nail pigmentation, or patient education on warning signs of skin cancer. Matches user intent seeking visual reference for concerning nail changes.