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Adult :: Male :: Toenail

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The images below contain information about several conditions that can affect the toenails in adults. The toenail is affected by conditions specific to the nail and diseases of the whole body. Onychomycosis is an example of a nail disease that is a fungal infection of the nail that causes it to become brittle and discolored. Even squamous cell carcinoma can start in the nail bed, the smooth skin under the nail. Systemic, or whole body, diseases such as psoriasis or lichen planus can cause the nails to change. Both conditions can lead to a lifting of the nail called onycholysis, where the nail becomes detached from the nail bed below. Simply being ill can cause the nail to slow its growth, leading to horizontal lines across the nail, called Beau's lines.

Beau's Lines Beau's lines are horizontal (transverse) depressions in the nail plate that run parallel to the shape of the white, moon-shaped portion of the nail bed (lunula) seen at the nail's origin. They result from a sudden…

Nail Infection, Fungal (Onychomycosis) Onychomycosis, commonly known as a fungal nail infection, is infection of the fingernails or toenails by forms of fungi and yeast. Fungal nail infections account for nearly half of all nail…

Nail Lifting (Onycholysis) Nail lifting (onycholysis) is the spontaneous separation (detachment) of the fingernail or toenail from the nail bed at the end of the nail (distal) and/or on the sides of the nail (lateral). The appearance…

Squamous Cell Carcinoma (SCC) Squamous cell carcinoma (SCC) is the second most common form of skin cancer. Squamous cell carcinoma usually occurs on sun-damaged skin, especially in light-skinned individuals with a long history of chronic sun…