What Causes Yellow, Thick Toenails? Signs, Symptoms & Treatment of Onychomycosis #3411341 (License: Personal Use)

The image displays all five toes with pronounced nail dystrophy: nails are yellowish-brown, markedly thickened, brittle, and lifted from the nail bed (onycholysis). The largest toe exhibits severe hyperkeratosis and subungual debris, consistent with chronic dermatophyte infection, likely Trichophyton rubrum. Surrounding skin appears mildly erythematous and desquamating, suggesting secondary inflammation.

Used in medical dermatology or podiatry web pages discussing fungal nail infections; supports educational content for patients searching symptoms like “yellow thick toenails” or “how to treat toenail fungus.” Matches user intent for diagnosis, self-assessment, and treatment options.