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Longitudinal section through nail and its nail groove (sulcus). In human anatomy, the eponychium is the thickened layer of skin at the base of the fingernails and toenails. [ 1] It can also be called the medial or proximal nail fold. The eponychium differs from the cuticle; the eponychium comprises live skin cells whilst the cuticle is dead ...
Periungual wart. Periungual warts are warts that cluster around the fingernail or toenail. They appear as thickened, fissured cauliflower-like skin around the nail plate. Periungual warts often cause loss of the cuticle and paronychia. Nail biting increases susceptibility to these warts.
Onychomycosis. Onychomycosis, also known as tinea unguium, [4] is a fungal infection of the nail. [2] Symptoms may include white or yellow nail discoloration, thickening of the nail, and separation of the nail from the nail bed. [2] Fingernails may be affected, but it is more common for toenails. [3]
Anatomy of the basic parts of a human nail. In human anatomy, "cuticle" can refer to several structures, but it is used in general parlance, and even by medical professionals, to refer to the thickened layer of skin surrounding fingernails and toenails (the eponychium), and to refer to the superficial layer of overlapping cells covering the hair shaft (cuticula pili), consisting of dead cells ...
A nail disease or onychosis is a disease or deformity of the nail. Although the nail is a structure produced by the skin and is a skin appendage, nail diseases have a distinct classification as they have their own signs and symptoms which may relate to other medical conditions. Some nail conditions that show signs of infection or inflammation ...
Beau's lines. Beau's lines are deep grooved lines that run from side to side on the fingernail or the toenail. [ 1] They may look like indentations or ridges in the nail plate. [ 2]: 657. This condition of the nail was named by a French physician, Joseph Honoré Simon Beau (1806–1865), who first described it in 1846.
What it looks like: Psoriasis, another inflammatory condition that dermatologists see frequently, is known to causes scaly, itchy areas of thickened skin called plaques that can look like rashes.
Dermatology. Yellow nail syndrome, also known as " primary lymphedema associated with yellow nails and pleural effusion ", [ 1]: 849 is a very rare medical syndrome that includes pleural effusions, lymphedema (due to under development of the lymphatic vessels) and yellow dystrophic nails. [ 2] Approximately 40% will also have bronchiectasis.